Home

ASUS P7P55_LX Owner's Manual

1. Den 3 Volts D 829 m m am omni P7P55 LX ATX power connectors For a fully configured system we recommend that you use a power supply unit PSU that complies with ATX 12 V Specification 2 0 or later version and provides a minimum power of 400 W DO NOT forget to connect the 4 pin ATX 12V power plug Otherwise the system will not boot up If you are uncertain about the minimum power supply requirement for your system refer to the Recommended Power Supply Wattage Calculator at http support asus com PowerSupplyCalculator PSCalculator aspx SLanguagezen us for details 5 USB connectors 10 1 pin USB910 USB1112 USB1314 These connectors are for USB 2 0 ports Connect the USB module cable to any of these connectors then install the module to a slot opening at the back of the system chassis These USB connectors comply with USB 2 0 specification that supports up to 480 Mbps connection speed oo 8 ti ad 5 i Baa Goa n namo namo mam 26 Dc 25552 22552 53552 EE eege DEFI CEO ELA USB1314lelekelel vepuuzgelelele J USB9g a259 a242 Beso o EE 44 5 am 5 E m 3 2 D 352 P7P55 LX USB2 0 connectors Never connect a 1394 cable to the USB connectors Doing so will damage the motherboard VA The USB module cable is purchased separately 1
2. Slave Slave VA Pin 20 on the IDE connector is removed to match the covered hole on the Ultra DMA cable connector This prevents incorrect insertion when you connect the IDE cable Use the 80 conductor IDE cable for Ultra DMA 133 100 66 IDE devices PRI_EIDE PINI NOTE Orient the red markings on the IDE ribbon cable to PIN 1 P7P55 LX IDE connector AN If any device jumper is set as Cable Select ensure that all other device jumpers have the same setting 3 Optical drive audio connector 4 pin CD These connectors allow you to receive stereo audio input from sound sources such as a CD ROM TV tuner or MPEG card E oo a a CD m d THT EE 2998 Q Doc E 2055 Ex 2 amp Ca Prpssix 5 o r o o 0 3 2 3 2 o 0 nd z P7P55 LX Internal audio connector ASUS P7P55 LX 1 25 4 ATX power connectors 24 pin EATXPWR 4 pin ATX12V These connectors are for ATX power supply plugs The power supply plugs are designed to fit these connectors in only one orientation Find the proper orientation and push down firmly until the connectors completely fit ATX12V EATXPWR 12 Volts
3. M378B2873DZ1 CH9 1024MB SAMSUNG SEC 846 HCH9 K4B1G08460 M378B2873EH1 CH9 1024MB Samsung SEC 913 HCH9 K4B1G0846E M391B2873DZ1 CH9 1024MB Samsung K4B1G0846D HCH9 ECC continued on the next page Chapter 1 Product introduction DDR3 1333 MHz capability Chip NO Voltage DIMM socket support optinal EN EN Le M378B5673DZ1 CH9 Samsung K4B1G0846D HCH9 M378B5673EH1 CH9 2048MB Samsung SEC 913 HCH9 K4B1G0846E M391B5673DZ1 CH9 2048MB Samsung _K4B1G0846D HCH9 ECC W1333X2GB8 1024MB N A Heat Sink Package TS128MLK64V3U 1024MB N A SEC 813HCH9 K4B1G0846D TS128MLK72V3U 1024MB N A K4B1G0846D ECC TS256MLK64V3U 2048MB Micron 9GF27D9KPT TS256MLK64V3U 2048MB SEC816HCH9K4B1G0846D 2GB DIMM PC3 10666 2048MB SEC 904 HCH9 K4B1G0846D KTG2G1333PG3 2048MB Heat Sink Package SS Single sided DS Double sided DIMM support At Supports one module inserted into any slot as Single channel memory configuration B Supports one pair of modules inserted into either the blue or black slots as one pair of Dual channel memory configuration C Supports four modules inserted into both the blue and black slots as two pairs of Dual channel memory configuration VA ASUS exclusively provides hyper DIMM support function Hyper DIMM support is subject to the physical characteristics of individual CPUs According to Intel spec definition DDR3 1600 is supported for o
4. This motherboard supports PCI Express x1 network cards SCSI cards and other cards that comply with the PCI Express specifications 1 8 5 PCI Express x16 slots This motherboard has two PCI Express 2 0 x16 slots that support PCI Express x16 2 0 graphic cards complying with the PCI Express specifications Refer to section 1 2 Motherboard Overview for the location of the expansion slots ASUS P7P55 LX 1 19 1 9 1 20 In single VGA card mode use the PCle 2 0 x16 1 slot blue for a PCI Express x16 graphics card to get better performance We recommend that you provide sufficient power when running CrossFireX mode Connect a chassis fan to the motherboard connector labeled CHA FAN when using multiple graphics cards for better thermal environment Jumpers Clear RTC RAM 3 pin CLRTC This jumper allows you to clear the Real Time Clock RTC RAM in CMOS You can clear the CMOS memory of date time and system setup parameters by erasing the CMOS RTC RAM data The onboard button cell battery powers the RAM data in CMOS which include system setup information such as system passwords oo Es CLRTC 12 23 mr Ch Normal Clear RTC Default To erase the RTC RAM 1 2 Turn OFF the computer and unplug the power cord Move the jumper cap from pins 1 2 default to pins 2 3 Keep the cap on pins 2 3 for about 5 10 seconds then mo
5. 3 3V Voltage 5V Voltage 12V Voltage The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators Select Ignored if you do not want to detect this item 2 7 Boot menu The Boot menu items allow you to change the system boot options Select an item then press Enter to display the submenu BIOS SETUP UT Main Ai Tweaker Advanced Power Boot Tools Exit Boot Settings Specifies the Boot n Device Priority p Boot Device Priority sequence p Boot Settings Configuration A virtual floppy disk gt Security drive Floppy Drive B may appear when you set the CD ROM drive as the first boot device Select Screen qd Select Item Enter Go to Sub Screen F1 General Help F10 Save and Exit ESC Exit v02 61 C Copyright 1985 2009 American Megatrends Inc 2 7 1 Boot Device Priority 1st xxth Boot Device Removable Dev These items specify the boot device priority sequence from the available devices The number of device items that appears on the screen depends on the number of devices installed in the system Configuration options Removable Dev Hard Drive ATAPI CD ROM Disabled P To select the boot device during system startup press F8 when ASUS Logo appears To access Windows OS in Safe Mode do any of the following Press F5 when ASUS Logo appears D Press F8 after POST 2 24 ASUS P7P55 LX 2 7 2 Boot Sett
6. Configuration options IDE RAID AHCI If you want to use the Serial ATA hard disk drives as Parallel ATA physical storage devices keep the default setting IDE If you want the Serial ATA hard disk drives to use the Advanced Host Controller Interface AHCI set this item to AHCI The AHCI allows the onboard storage driver to enable advanced Serial ATA features that increases storage performance on random workloads by allowing the drive to internally optimize the order of commands If you want to create a RAID 0 RAID 1 RAID 5 or RAID 10 set using the Intel Matrix Storage Technology from the Serial ATA hard disk drives set this item to RAID Hard Disk Write Protect Disabled Disables or enables device write protection This will be effective only if the device is accessed through BIOS Configuration option Disabled Enabled IDE Detect Time Out Sec 35 Selects the time out value for detecting ATA ATAPI devices Configuration options 0 5 10 15 20 25 30 35 ASUS P7P55 LX 2 3 5 AHCI Configuration This menu is the section for AHCI configuration It appears only when you set the item Configure SATA as from the sub menu of SATA Configuration to AHCI SATA Port1 6 XXXX Displays the status of auto detection of SATA devices SATA Port1 Auto Allows you to select the type of device connected to the system Configuration options Auto Not Installed SMART Monitoring Enabled Allows
7. MHz Above 1600 exclusive DRAM O C Profile function to overclock the DRAM Adjust BCLK frequency to obtain a better performance after applying the D O C P function P When using DIMMs with afrequency higher than the Intel CPU spec use this ASUS eXtreme Memory Profile Disabled This item appears only when you set the Ai Overclock Tuner item to X M P To obtain the best performance of the X M P DIMM or 1600MHz DIMM install only one DIMM on each memory channel 2 4 2 CPU Ratio Setting Auto Allows you to adjust the ratio between CPU Core Clock and BCLK Frequency Use the lt gt and lt gt keys to adjust the value The valid value ranges differently according to your CPU model 2 4 3 Intel R SpeedStep TM Tech Enabled When set to Disabled the CPU runs at its default speed When set to Enabled the CPU speed is controlled by the operating system Configuration options Disabled Enabled 2 4 4 Intel R TurboMode Tech Enabled This item appears only if you set the Ratio CMOS Setting item to Auto Turbo mode allows processor cores to run faster than marked frequency in specific condition Configuration options Disabled Enabled 2 4 5 Xtreme Phase Full Power Mode Auto Auto Automatic configuration Enabled Enables Full Power Mode to ensure the best CPU overclocking performance Chapter 2 BIOS information 2 13 2 14 The following two items appear only when you set the Ai Over
8. Al NET2 remotely detects the cable connection immediately after nee turning on the system and any faulty cable connections are reported back up to 100 meters at 1 meter accuracy AR C P R CPU Parameter Recall The BIOS C P R feature automatically restores the CPU default settings when the system hangs due to overclocking failure C P R eliminates the need to open the system chassis and clear the RTC data Simply shut down and reboot the system and the BIOS automatically restores the CPU parameters to their default settings Ee Green ASUS re This motherboard and its packaging comply with the European Union s Restriction on the use of Hazardous Substances RoHS This is in line with the ASUS vision of creating environment friendly and recyclable products packaging to safeguard consumers health while minimizing the impact on the environment Chapter 1 Product introduction 1 4 Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings Unplug the power cord from the wall socket before touching any component Before handling components use a grounded wrist strap or touch a safely grounded object or a metal object such as the power supply case to avoid damaging them due to static electricity Hold components by the edges to avoid touching the ICs on them Whenever you uninstall any component place it on a grounded antistatic pad o
9. Before updating BIOS 1 Prepare the motherboard support DVD and a USB flash drive in FAT32 16 format and single partition 2 Download the latest BIOS file and BIOS Updater from the ASUS website at http support asus com and save them on the USB flash drive Chapter 2 BIOS information 2 3 2 4 NTFS is not supported under DOS environment Do not save the BIOS file and BIOS 3 Updater to a hard disk drive or USB flash drive in NTFS format Do not save the BIOS file to a floppy disk due to low disk capacity Turn off the computer and disconnect all SATA hard disk drives optional Booting the system in DOS environment 1 2 Insert the USB flash drive with the latest BIOS file and BIOS Updater to the USB port Boot your computer When the ASUS Logo appears press lt F8 gt to show the BIOS Boot Device Select Menu Insert the support DVD into the optical drive and select the optical drive as the boot device Please select boot dev CDROM XXXXXXXXXXXXXXX 1 and to move selection ENTER to select boot device ESC to boot using defaults When the Make Disk menu appears select the FreeDOS command prompt item by pressing the item number At the FreeDOS prompt type d and press Enter to switch the disk from Drive C optical drive to Drive D USB flash drive Welcome to FreeDOS http www freedos org c Ld D gt Backing up the current BIOS To backup the current BIOS file using th
10. Clock Advance 1 Clock Normal Delay 1 Clock Delay 15 Clock 3rd Information 8 8 25 17 17 17 9 9 6 9 9 6 The values vary depending on your settings of the following sub items DRAM WRITE to READ Delay DD Auto Configuration options Auto 1 DRAM Clock 8 DRAM Clock DRAM WRITE to READ Delay DR Auto Configuration options Auto 1 DRAM Clock 8 DRAM Clock DRAM WRITE to READ Delay SR Auto Configuration options Auto 10 DRAM Clock 22 DRAM Clock DRAM READ to WRITE Delay DD Auto Configuration options Auto 2 DRAM Clock 14 DRAM Clock DRAM READ to WRITE Delay DR Auto Configuration options Auto 2 DRAM Clock 14 DRAM Clock DRAM READ to WRITE Delay SR Auto Configuration options Auto 2 DRAM Clock 14 DRAM Clock DRAM READ to READ Delay DD Auto Configuration options Auto 2 DRAM Clock 9 DRAM Clock Chapter 2 BIOS information 2 15 DRAM READ to READ Delay DR Auto Configuration options Auto 2 DRAM Clock 9 DRAM Clock DRAM READ to READ Delay SR Auto Configuration options Auto 4 DRAM Clock 6 DRAM Clock DRAM WRITE to WRITE Delay DD Auto Configuration options Auto 2 DRAM Clock 9 DRAM Clock DRAM WRITE to WRITE Delay DR Auto Configuration options Auto 2 DRAM Clock 9 DRAM Clock DRAM WRITE to WRITE Delay SR Auto Configuration options Auto 4 DRAM Clock 6 DRAM Clock 2
11. NA maka a AMA Ana 1 13 1 7 2 Memory configurations sss 1 14 1 7 8 Installing a DIMM sse 1 18 1 444 Removing a DIMM sss 1 18 Expansion slots iiu rm irasci dm dr raa C f 1 19 1 8 1 Installing an expansion Card 1 19 1 8 2 Configuring an expansion Card 1 19 1 8 3 PONSI teenage Ee 1 19 1 8 X PCI Express x1 slots 1 19 1 85 X PCI Express x16 slots sss 1 19 JUMPETS m 1 20 MemOK switch tenen nnam nenetineenca 1 22 Contents 111 Connectors au nie dansade BARAN ANAKAN 1 11 1 Rear panel connectors 1 11 2 Internal connectors 1 12 Software support ss 112 1 Installing an operating system 1 12 2 Support DVD information sss Chapter 2 BIOS information 2 1 Managing and updating your BIOS s 2 1 2 1 1 ASUS Update utility esses 2 1 2 1 2 ASUS EZ Flash 2 ce nananana eene 2 2 2 1 3 ASUS CrashFree DOG 2 3 2 1 4 ASUS BIOS Updater maana nananana wa eene 2 3 2 2 BIOS setup program 2 2 1 BIOS menu screen 2 2 2 Menu baka a a BA nit anes AA 2 2 3 Navigation CA sss 2 234 Menuitems ulunan 22 5 Submenuitems sse 2 2 6 Configuration fields sss 2 8 2 2 7 Pop up Window ssee e 2 8 2 2 8 roll Das t RERO ARNAN Nan 2 8 2 29 General hen 2 8 2 3 Main menu ener tnter teinte nnns 2 9 2 3 1 System TIME AA
12. The BIOS file in the support DVD may not be the latest version Download the latest BIOS file from the ASUS website at www asus com The removable devices that ASUS CrashFree BIOS support vary with motherboard models For motherboards without the floppy connector prepare a USB flash disk before using this utility Recovering the BIOS To recover the BIOS 1 Turn on the system 2 Insert the support DVD to the optical drive or the removable device that contains the BIOS file to the USB port or to the floppy disk drive if supported 3 The utility automatically checks the devices for the BIOS file When found the utility reads the BIOS file and starts flashing the corrupted BIOS file 4 Turn off the system after the utility completes the updating process and turn on again DO NOT shut down or reset the system while updating the BIOS Doing so can cause CEN System boot failure YA Ensure to load the BIOS default settings to ensure system compatibility and stability Select the Load Setup Defaults item under the Exit menu Refer to section 2 9 Exit menu for details 2 1 4 ASUS BIOS Updater The ASUS BIOS Updater allows you to update BIOS in DOS environment This utility also allows you to copy the current BIOS file that you can use as a backup when the BIOS fails or gets corrupted during the updating process The succeeding utility screens are for reference only The actual utility screen displays may not be same as shown
13. in the SATA1 4 menus LBA Large Mode Auto Enables or disables the LBA mode Setting to Auto enables the LBA mode if the device supports this mode and if the device was not previously formatted with LBA mode disabled Configuration options Disabled Auto Chapter 2 BIOS information 2 9 Block Multi Sector Transfer M Auto Enables or disables data multi sectors transfers When set to Auto the data transfer from and to the device occurs multiple sectors at a time if the device supports multi sector transfer feature When set to Disabled the data transfer from and to the device occurs one sector at a time Configuration options Disabled Auto PIO Mode Auto Selects the PIO mode Configuration options Auto 0 1 2 3 4 DMA Mode Auto Selects the DMA mode Configuration options Auto SMART Monitoring Auto Sets the Smart Monitoring Analysis and Reporting Technology Configuration options Auto Disabled Enabled 32Bit Data Transfer Enabled Enables or disables 32 bit data transfer Configuration options Disabled Enabled 2 3 4 Storage Configuration The Storage Configuration menu allows you to configure your storage device s Select an item then press Enter to display the sub menu SATA Configuration Enhanced Configuration options Disabled Compatible Enhanced Configure SATA as IDE Sets the configuration for the Serial ATA connectors supported by the Southbridge chip
14. installing the CPU Upon purchase of the motherboard ensure that the PnP cap is on the socket and the CAB socket contacts are not bent Contact your retailer immediately if the PnP cap is missing or if you see any damage to the PnP cap socket contacts motherboard components ASUS will shoulder the cost of repair only if the damage is shipment transit related Keep the cap after installing the motherboard ASUS will process Return Merchandise Authorization RMA requests only if the motherboard comes with the cap on the LGA1156 socket The product warranty does not cover damage to the socket contacts resulting from incorrect CPU installation removal or misplacement loss incorrect removal of the PnP cap 1 6 1 Installing the CPU To install a CPU 1 Locate the CPU socket on the motherboard E 1 3 S NG mn EJ oO H o 329 P7P55 LX socket LGA1156 2 Press the load lever with your thumb A Load lever and then move it to the right B until it is released from the retention tab To prevent damage to the socket pins eh do not remove the PnP cap unless you are installing a CPU Retention tab 1 8 Chapter 1 Product introduction 3 Lift the load lever in the direction of the arrow until the load plate is completely lifted 4 Remove the PnP cap from the CPU socket 5 Position the CPU ove
15. is the standard way of accessing information from a memory module gt Under the default state some memory modules for overclocking may operate at a lower frequency than the vendor marked value To operate at the vendor marked or at a higher frequency refer to section Ai Tweaker menu for manual memory frequency adjustment For system stability use a more efficient memory cooling system to support a full memory load 4 DIMMs or overclocking condition P7P55 LX Motherboard Qualified Vendors Lists QVL DDR3 2200 O C MHz capability Part No Chip Chip NO Voltage DIMM socket Brand support Optional DN d N A Heat Sink Package 1333 9 1 65V N A Heat Sink Packag 1 65V 1 14 Chapter 1 Product introduction DDR3 2000 O C MHz capability Chip NO Voltage DIMM socket support Optional n GU34GB2000C9DC XMP 4096MB Kit of 2 Heat Sink Package KHX2000C8D3T1K3 3GX XMP 3072MB kit of 3 Heat Sink Package KHX2000C9D3T1K3 3GX XMP 3072MB kit of 3 Heat Sink Package KHX2000C8D3T1K3 6GX XMP 6144MB Kit of 3 Heat Sink Package OCZ3P20002GK EPP 2048MB Kit of 2 Heat Sink Package OCZ3P2000EB2GK 2048MB Kit of 2 Heat Sink Package Heat Sink Package Vendor Part No Size SS DS Chi Chip NO Voltage DIMM socket Brand support Optional OCZ3P1866LV4GK 4096MB Kit of 2 DS N A Heat Sink Package 9 9 9 27 1 65V 5 Vendor Part No SS DS Chip Chip NO Voltage DIMM socket Brand support Optional Lu B d 78 0AGCD CD
16. om ooo SSS P7P55 LX Keyboard Power Setting 3 USB device wake up 3 pin USBPW1 8 3 pin USBPW9 14 Set these jumpers to 5V to wake up the computer from S1 sleep mode CPU stopped DRAM refreshed system running in low power mode using the connected USB devices Set to 5VSB to wake up from S3 and S4 sleep modes no power to CPU DRAM in slow refresh power supply in reduced power mode e ma pa USBPW1 8 CR ma 45V 5VSB nce o Default iH aaa USBPW9 14 CF 12 23 o O ceo 5V 5VSB mesen m m of PAS Default P7P55 LX USB Device Wake Up The USB device wake up feature requires a power supply that can provide 500mA on the 5VSB lead for each USB port otherwise the system would not power up The total current consumed must NOT exceed the power supply capability 5VSB whether under normal condition or in sleep mode ASUS P7P55 LX 1 21 1 10 MemOK switch Onboard switch allows you to fine tune performance when working on a bare or open case system This is ideal for overclockers and gamers who continually change settings to enhance system performance MemOK switch Installing DIMMs that are incompatible with the motherboard may cause system boot failure and the DRAM LED near the MemOK switch lights continuously Press and hold the MemOK switch until the DRAM LED starts blinking to begin automatic memory compatibili
17. on the system chassis Pressthe power button to turn the system off then back on Do this option only if you failed to enter BIOS Setup using the first two options Using the power button reset button or the lt Ctrl gt lt Alt gt lt Del gt keys to force reset from a running operating system can cause damage to your data or system We recommend to always shut down the system properly from the operating system The default BIOS settings for this motherboard apply for most conditions to ensure optimum performance If the system becomes unstable after changing any BIOS settings load the default settings to ensure system compatibility and stability Select the Load Setups Default item under the Exit Menu See section 2 9 Exit Menu The BIOS setup screens shown in this section are for reference purposes only and may not exactly match what you see on your screen Visit the ASUS website at www asus com to download the latest BIOS file for this motherboard ASUS P7P55 LX 2 2 1 BIOS menu screen Menu items Menu bar Configuration fields General help Ai Tweaker Advanced i Tools Exit I 56 38 Use ENTER TAB or System Date Thu 07 09 2009 SHIFT TAB to select age English a field SATA1 Not Detected vse ivi ers p ee SATA2 Not Detected CORREO CC VE SATA3 Not Detected SATA4 Not Detected SATA5 Not Detected SATA6 Not Detected Select Screen Select Item Change Field Select Field
18. s Disables or disables the onboard LAN Boot ROM Configuration options Enabled Disabled Onboard IDE Controller Enabled Enables or disables the onboard IDE Controller Configuration options Enabled Disabled Serial Port Address 3F8 IRQ4 Allows you to select the Serial Port1 base address Configuration options Disabled 3F8 IRQ4 2F8 IRQ3 3E8 IRQ4 2E8 IRQ3 2 5 4 USB Configuration The items in this menu allows you to change the USB related features Select an item then press lt Enter gt to display the configuration options The USB Devices Enabled item shows the auto detected values If no USB device is detected the item shows None USB Functions Enabled Enables or disables the USB Host Controllers Configuration options Enabled Disabled 2 20 ASUS P7P55 LX YA The following items appear only when you set USB Support to Enabled Legacy USB Support Auto Disabled Disables the function Enabled Enables the support for USB devices on legacy operating systems OS Auto Allows the system to detect the presence of USB devices at startup If detected the USB controller legacy mode is enabled If no USB device is detected the legacy USB support is disabled BIOS EHCI Hand off Enabled Disabled Disables the function Enabled Enables the support for operating systems without an EHCI hand off feature 2 5 5 PCIPnP The PCIPNP menu items allow you to change the advanced se
19. that comes with the motherboard package Installing ASUS Update To install ASUS Update 1 Place the support DVD in the optical drive The Drivers menu appears 2 Click the Utilities tab then click ASUS Update 3 Follow the onscreen instructions to complete the installation VA Quit all Windows applications before you update the BIOS using this utility Updating the BIOS To update the BIOS 1 From the Windows desktop click Start gt Programs gt ASUS gt ASUSUpdate gt ASUSUpdate to launch the ASUS Update utility 2 From the dropdown list select any of the updating process Updating from the Internet a Select Update BIOS from the Internet then click Next b Select the ASUS FTP site nearest you to avoid network traffic or click Auto Select then click Next c From the FTP site select the BIOS version that you wish to download then click Next Chapter 2 BIOS information 2 1 P The ASUS Update utility is capable of updating itself through the Internet Always update the utility to avail all its features Updating from a BIOS file a Select Update BIOS from a file then click Next b Locate the BIOS file from the Open window then click Open 3 Follow the onscreen instructions to complete the updating process 2 1 2 ASUS EZ Flash 2 The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS based utility Before you start using this utility download the latest BIOS fi
20. the following items Please key in numbers directly VCore Over Voltage Offset Offset Voltage Auto IMC Voltage Auto CPU PLL Voltage Auto PCH Voltage Auto DRAM Voltage 1 6V kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Load Line Calibration v v02 61 C Copyright 1985 2009 American Megatrends Inc 2 4 1 Ai Overclock Tuner Auto Allows selection of CPU overclocking options to achieve desired CPU internal frequency Select either one of the preset overclocking configuration options Manual Allows you to individually set overclocking parameters Loads the optimal settings for the system Overclocks DRAM frequency by adjusting BCLK frequency If you install memory module s supporting the eXtreme Memory Profile X M P Technology choose this item to set the profile s supported by your memory module s for optimizing the system performance ASUS P7P55 LX The configuration options for the following sub item vary depending on the DIMMs you install on the motherboard DRAM O C Profile DDR3 1600MHz This item appears only when you set the Ai Overclock Tuner item to D O C P and allows you to select a DRAM O C profile which applies different settings to DRAM frequency DRAM timing and DRAM voltage Configuration options DDR3 1600MHz DDR3 1800MHz DDR3 1866MHz DDR3 2000MHz DDR3 2133MHz DDR3 2200MHz DRAM Frequency CPU Frequency GHz
21. you to set the Self Monitoring Analysis and Reporting Technology Configration options Disabled Enabled 2 3 6 System Information This menu gives you an overview of the general system specifications The BIOS automatically detects the items in this menu BIOS Information Displays the auto detected BIOS information Processor Displays the auto detected CPU specification System Memory Displays the auto detected system memory Chapter 2 BIOS information 2 11 2 12 2 4 Ai Tweaker menu The Ai Tweaker menu items allow you to configure overclocking related items N Be cautious when changing the settings of the Ai Tweaker menu items Incorrect field La values can cause the system to malfunction The configuration options for this chapter vary depending on the CPU and DIMM model you installed on the motherboard BIOS SETUP UTILITY Main Ai Tweaker Advanced Power Boot Tools Exit Configure System Performance Settings A PICSSUENTEH to sun the Ai Overclock Tuner utility to Tuner BCIK Auto CPU Ratio Setting Auto Intel R SpeedStep TM Tech Enabled Intel R TurboMode Tech Enabled Xtreme Phase Full Power Mode Auto DRAM Frequency Auto QPI Frenquency Auto lt gt Select Screen p DRAM Timing Control un Select Item Enter Go to Sub Screen CPU Clock Skew F1 General Help Auto F10 Save and Exit v ESC Exit v02 61 C Copyright 1985 2009 American Megatrends Inc Scroll down to display
22. 22 2 6 4 APM CGonfouratton 2 22 2 6 5 Hardware Monitor esee 2 23 Boot menu 2 24 2 7 1 Boot Device Priority sess 2 24 2 7 2 Boot Settings Configuration sss 2 25 py 2 25 Tools MENU eese nnne nnne rnnt tentes 2 26 2 8 1 ASUS O C Profile NENNEN 2 27 GE RE WRC 2 27 2 8 3 Express Gate ENEE 2 27 2 8 4 ASUS EZ Flash 2 sse 2 28 EXIt GIA PAA AA 2 28 vi Notices Federal Communications Commission Statement This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions This device may not cause harmful interference and This device must accept any interference received including interference that may cause undesired operation This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with manufacturer s instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be det
23. 26 Chapter 1 Product introduction 6 CPU power and chassis fan connectors 4 pin CPU FAN 3 pin PWR FAN 3 pin CHA FAN Connect the fan cables to the fan connectors on the motherboard ensuring that the black wire of each cable matches the ground pin of the connector CPU FAN PWR FAN mm m 8888 252 z232 i 272 n CHA_FAN mmn 252 O O g26 mes am Um Um meses 8 P7P55 LX fan connectors Do not forget to connect the fan cables to the fan connectors Insufficient air flow inside the HA system may damage the motherboard components These are not jumpers Do not place jumper caps on the fan connectors P Only the 4 pin CPU fan supports the ASUS Q FAN feature The CPU FAN connector supports a CPU fan of maximum 2A 24 W fan power Only the CPU_FAN and CHA_FAN connectors support the FAN Xpert feature If you install two VGA cards we recommend that you plug the rear chassis fan cable to the motherboard connector labeled CHA_FAN for better thermal environment 7 Digital audio connector 4 1 pin SPDIF OUT This connector is for an additional Sony Philips Digital Interface S PDIF port Connect the S PDIF Out module cable to this connector then install the module to a slot opening at the back of the system chassis cn SPD
24. 4 9 CPU Clock Skew Auto Adjusting this item may help enhancing BCLK overclocking ability You may need to adjust the NB Clock Skew item at the same time Configuration options Auto Normal Delay 100ps Delay 1500ps Some of the following items are adjusted by typing the desired values using the numeric keypad and press the Enter key You can also use the lt gt and lt gt keys to adjust the value To restore the default setting type auto using the keyboard and press the Enter key 2 4 10 VCore Over Voltage Offset Allows you to set the CPU Vcore over voltage Different sub items appear according to the VCore Over Voltage item setting Configuration options Offset Manual Offset Voltage Auto This item appears only when you set the Vcore Over Voltage item to Offset and allows you to set the Offset voltage The values range from 0 00625V to 0 50000V with a 0 00625V interval Offset Sign This item appears only when you set the Offset Voltage item to a value other than Auto To offset the voltage by a positive value FH To offset the voltage by a negative value Fixed Voltage Auto This item appears only when you set the VCore Over Voltage item to Manual and allows you to set a fixed CPU voltage The values range from 0 85V to 2 10V with a 0 00625V interval i Refer to the CPU documentation before setting the CPU Vcore voltage Setting a high SN VCore voltage may
25. BA12N 1 3V low voltage DDR3 1333 CL9 9 9 24 6144MB Kit of 3 N A Heat Sink Package 1 5V FLFD45F B8MF9 1024MB Micron 8HD22D9JNM FLFD45F B8MH9 MAES 1024MB Micron 9CF22D9KPT FLFE85F B8MF9 2048MB Micron 8HD22D9JNM FLFE85F B8MH9 MEES 2048MB Micron 9GF27D9KPT KVR1333D3N9 1G 1024MB Hynix H5TQ1G83BFR KVR1333D3N9 2G MT8JTF12864AY 1G4D1 2048MB 1024MB Qimonda Micron IDSH1G 03A1F1C 13H 8LD22D9JNM MT8JTF12864AZ 1G4F1 1024MB Micron 9FF22D9KPT MT9JSF 12872AZ 1G4F1 1024MB Micron 91F22D9KPT ECC MT8JTF12864AY 1G4D1 3072MB Kit of 3 Micron 8XD22D9JNM MT12JSF25672AZ 1G4F1 2048MB Micron 91F22D9KPT ECC MT16JTF25664AY 1G1D1 2048MB Micron 8LD22 D9JNM MT18JTF25664AZ 1G4F1 2048MB MT16JTF25664AY 1G4D1 6144MB Kit of 3 Micron Micron 9KF27D9KPT 8UD22D9JNM OCZ3P13332GK 2048MB Kit of 2 N A Heat Sink Package OCZ3X1333LV3GK XMP 3072MB Kit of 3 N A Heat Sink Package OCZ3G13334GK 4096MB Kit of 2 N A Heat Sink Package OCZ3RPX1333EB4GK 4096MB Kit of 2 Heat Sink Package OCZ3X13334GK XMP 4096MB Kit of 2 Heat Sink Package OCZ3G1333LV6GK OCZ3P1333LV6GK 6144MB Kit of 3 N A Heat Sink Package Heat Sink Package 7 7 7 20 OCZ3X1333LV6GK XMP 6144MB Kit of 3 N A Heat Sink Package 8 8 8 20 M378B2873DZ1 CH9 1024MB Samsung K4B1G0846D HCH9
26. DHX 2048MB N A Heat Sink Package TW3X4G133309 G 4096MB Kit of 2 N A Heat Sink Package CT12864BA1339 8FF 1024MB Micron 9FF22D9KPT CT12872BA1339 9FF 1024MB Micron 91F22D9KPT ECC BL12864TA1336 85FB1 2048MB Kit of 2 N A Heat Sink Package CT12864BA1339 8SFD CT25664BA1339 16FF Micron Micron 8XD22D9JNM 9KF27D9KPT CT25672BA1339 18FF 2048MB Micron 91F22D9KPT ECC BL25664ABA1336 16SFB1 4096MB Kit of 2 N A Heat Sink Package BL25664BA1336 16SFB1 4096MB Kit of 2 N A Heat Sink Package BL25664BN1337 16FF 6144MB Kit of 3 XMP N A Heat Sink Package CT25664BA1339 16SFD F3 10600CL8D 2GBHK 1024MB Micron G SKILL 8UD22D9JNM Heat Sink Package F3 10600CL9D 2GBPK 1024MB G SKILL Heat Sink Package F3 10666CL7T 3GBPK 3072MB Kit of 3 N A Heat Sink Package F3 10666CL9T 3GBNQ 3072MBKit of 3 N A Heat Sink Package F3 10600CL7D 2GBPI 1024MB G SKILL Heat Sink Package F3 10600CL9D 2GBNQ 1024MB G SKILL Heat Sink Package F3 10666CL8D 4GBHK F3 10666CL7T 6GBPK 6144MB Kit of 3 N A N A Heat Sink Package Heat Sink Package 1 5 1 6V F3 10666CL9T 6GBNQ 6144MB Kit of 3 N A Heat Sink Package 1 5V 1 6V DDR3 1333 CL9 9 9 24 1024MB N A Heat Sink Package GV34GB1333C7DC 2048MB N A Heat Sink Package 1 5V GG34GB1333C9DC 4096MB Kit of 2 GEIL GL1L128M88
27. E PCIEX16 1 S ei ASUS Fa o mm SS PCIEX1 1 LS Sr PCIEX1 2 o P7P55 LX PCIEX16 2 Se Intel u P55 ro PCM por VIA SATA4 SATA5 SATA6 rir Sch PCI3 0M left D I USB1314 USBIII2 USB910 ERE SATA SATA2 SATAS AAFP CD SPDIF OUT mE ERE qm EP Iy ERT 2 HERB FEET EE GE WE Y 6 66 5 00 O 1 5 4 Layout contents Connectors Jumpers Slots LED Connectors Jumpers Slots LED Keyboard power 3 pin KBPWR Serial ATA connectors 7 pin SATA1 6 ATX power connectors 24 pin EATXPWR 4 pin 1 26 10 Clear RTC RAM 3 pin CLRTC ATX12V USB device wake up 3 pin USBPW1 8 3 pin 1 21 11 System panel connector 20 8 pin PANEL USBPW9 14 CPU power and chassis fan connectors 4 pin 1 27 12 USB connectors 10 1 pin USB910 CPU FAN 3 pin PWR FAN 3 pin CHA FAN USB1112 USB1314 LGA1156 CPU socket 1 8 13 Digital audio connector 4 1 pin SPDIF OUT DDR3 DIMM slots 1 13 14 Optical drive audio connector 4 pin CD IDE connector 40 1 pin PRI EIDE 1 25 15 Front panel audio connector 10 1 pin AAFP Onboard LED SB PWR x Serial port connector 10 1 pin COM1 ASUS P7P55 LX 1 7 1 6 Central Processing Unit CPU The motherboard comes with a surface mount LGA1156 socket designed for the Intel Core i7 Core i5 processors A Unplug all power cables before
28. E WITHOUT NOTICE AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies and are used only for identification or explanation and to the owners benefit without intent to infringe Contents Di PAA i Safety information About this guide iue rcnt iri n rra asina haga E dE i n iii P7P55 LX specifications summary Chapter 1 Product introduction 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 Welcomel m 1 1 Package contents Special features eret 1 3 1 Product highlights 1o octets 1 3 2 Innovative ASUS features Before you proceed eene nnns Motherboard overview neseuvrnenenvsenennvennnnevensvnenevennenenenannenenaveenene 1 5 1 Placement direction 1 5 2 Screw holes AEN 1 5 3 Motherboard Jovout EEN 1 5 4 Layout content Central Processing Unit CPU eene 1 6 1 Installing the CDU 1 6 2 Installing the CPU heatsink and fan 1 11 1 6 3 Uninstalling the CPU heatsink and fan 1 12 System memory ccce ree cte reap sce denique ee Ee 1 13 1 7 1 OVOIVIGW us
29. General Help Save and Exit Exit Storage Configuration System Information v02 61 C Copyright 1985 2009 American Megatrends Inc Submenu items Navigation keys 2 2 2 Menu bar The menu bar on top of the screen has the following main items Main For changing the basic system configuration Ai Tweaker For changing system performance settings Advanced For changing the advanced system settings Power For changing the advanced power management APM configuration Boot For changing the system boot configuration Tools For configuring options for special functions Exit For selecting the exit options and loading default settings To select an item on the menu bar press the right or left arrow key on the keyboard until the desired item is highlighted Chapter 2 BIOS information 2 2 3 Navigation keys At the bottom right corner of a menu screen are the navigation keys for that particular menu Use the navigation keys to select items in the menu and change the settings YA Some of the navigation keys differ from one screen to another 2 2 4 Menu items The highlighted item on the menu bar displays the specific items for that menu For example selecting Main shows the Main menu items The other items Ai Tweaker Advanced Power Boot Tools and Exit on the menu bar have their respective menu items 2 2 5 Submenu items A solid triangle before each item on any menu screen means that the item has a submenu To display
30. IFOUT 5V GND solls See SPDIF OUT P7P55 LX Digital audio connector fo The S PDIF module is purchased separately ASUS P7P55 LX 1 27 8 Serial ATA connectors 7 pin SATA1 6 These connectors are for the Serial ATA signal cables for Serial ATA 3Gb s hard disk and optical disk drives The Serial ATA 3Gb s is backward compatible with Serial ATA 1 5Gb s specification The data transfer rate of the Serial ATA 3Gb s is faster than the standard parallel ATA with 133 MB s Ultra DMA133 oo SATA4 SATA5 SATA6 HEH 56 28 H moe om om om P7P55 LX SATA connectors Z These connectors are set to Standard IDE mode by default In Standard IDE mode you can connect Serial ATA boot data hard disk drives to these connectors If you intend to create a Serial ATA RAID set using these connectors set the Configure SATA as item in the BIOS to RAID Before creating a RAID set refer to the RAID Supplementary Guide included in the folder named Manual in the support DVD You must install Windows XP Service Pack 2 or later version before using Serial ATA hard disk drives The Serial ATA RAID feature RAID 0 1 5 and 10 is available only if you are using Windows XP SP2 or later version When using hot plug and NCQ set the Configure SATA as item in the BIOS to AHCI See sec
31. NI 2 9 23 2 System Date AEN 2 9 2 3 3 aler dere eege 2 9 2 34 Storage Configuration ssssssssssss 2 10 2 3 5 AHC CGonfouraton 2 11 2 3 6 System Intormaton 2 11 2 4 Ai Tweaker menu esee nnne nnne nennen nnns 2 12 2 4 1 Ai Overclock Tune 2 12 2 4 2 CPU Ratio Setting 2 13 2 4 3 Intel R SpeedStep TM Tech 2 13 2 4 4 Intel R TurboMode Tech 2 13 Contents 2 5 2 6 2 7 2 8 2 9 2 4 5 Xtreme Phase Full Power Mode un 2 13 2 4 6 DRAM Frequency ssssssse eee 2 14 2 4 7 QPI Frequency 2 14 2 4 8 DRAM Timing Control 2 14 2 4 9 CPU Clock Skew seen 2 16 2 4 10 VCore Over Voltage Ll nananana na seen 2 16 2 4 11 IMG Voltage ulunan nunuwann wana sawaan nanana wawnanananasaananasasassanana 2 17 2 4 12 CPU PLL Voltage 00 cccceccesesceseseesseeseeeseeseerseseeeeess 2 17 2 4 13 PCH Voltage ul aaa 2 4 14 DRAM Voltage 2 4 15 Load Line Calibration see 2 17 Advanced menu esrnsesnernnnsvnnnnnennnsensennnennesnnesnarnnnsnnnnassnnssensennnensesr 2 18 2 5 1 CPU CGonfouraton nne 2 18 2 5 2 North Bridge Configuration ssssssss 2 20 2 5 8 Onboard Devices Configuration 2 20 2 5 4 USB Configuration sse 2 20 25 6 EE 2 21 2 56 Intel VIO ied etie epos 2 21 Power menu 2 6 1 Suspend Mode AE 2 22 2 6 ACPI 2 0 Support 2 22 2 6 3 ACPI APIC Support 2
32. ST reminding you that the BIOS has been restored to its default settings We recommend that you download and update to the latest BIOS version from the ASUS website at www asus com after using the MemOK function 1 22 Chapter 1 Product introduction 1 11 Connectors 1 11 1 Rear panel connectors 13 12 1 PS 2 Mouse port green This port is for a PS 2 mouse 2 LAN RJ 45 port This port allows Gigabit connection to a Local Area Network LAN through a network hub Refer to the table below for the LAN port LED indications LAN port LED indications Activity Link Speed Activity Link LED Speed LED LED LED OFF No link OFF 10 Mbps connection ORANGE 100 Mbps connection 1 Gbps connection LAN port BLINKING Data activity Center Subwoofer port orange This port connects the center subwoofer speakers Rear Speaker Out port black This port connects the rear speakers in a 4 channel 6 channel or 8 channel audio configuration 5 Line In port light blue This port connects the tape CD DVD player or other audio sources 6 Line Out port lime This port connects a headphone or a speaker In 4 channel 6 channel and 8 channel configurations the function of this port becomes Front Speaker Out Microphone port pink This port connects a microphone Side Speaker Out port gray This port connects the side speaker in an 8 channel audio configuration YA Refer to the audio configuration t
33. TAB to select Language English a field gt SATAL Not Detected CER pal Ga pap wa SATA2 Not Detected configure system time SATA3 Not Detected SATA4 Not Detected SATA5 Not Detected SATA6 Not Detected Select Screen Select Item Change Field Select Field General Help Save and Exit Exit Storage Configuration System Information v02 61 C Copyright 1985 2009 American Megatrends Inc 2 3 1 System Time xx xx xx Allows you to set the system time 2 3 2 System Date Day xx xx xxxx Allows you to set the system date 2 3 3 SATA1 6 While entering Setup the BIOS automatically detects the presence of SATA devices There is a separate submenu for each SATA device Select a device item then press lt Enter gt to display the SATA device information The BIOS automatically detects the values opposite the dimmed items Device Vendor Size LBA Mode Block Mode PIO Mode Async DMA Ultra DMA and SMART monitoring These values are not user configurable These items show Not Detected if no SATA device is installed in the system Type Auto Selects the type of SATA drive Setting to Auto allows automatic selection of the appropriate SATA device type Select CDROM if you are specifically configuring a CD ROM drive Select ARMD ATAPI Removable Media Device if your device is either a ZIP LS 120 or MO drive Configuration options Not Installed Auto CDROM ARMD YA This item only appears
34. V FLGD45F B8KG9 1024MB KFB8FNGXF ANX 12A FLGD45F B8MF7 MAEH XMP 1024MB Heat Sink Package FLGE85F B8KG9 2048MB KFB8FNGXF ANX 12A FLGE85F B8MF7 MEEH XMP 2048MB Heat Sink Package KHX1600C9D3K2 4G 4096MBkit of 2 Heat Sink Package KHX1600C9D3K3 6GX XMP 6144MB Kit of 3 Heat Sink Package OCZ3G1600LV3GK 3072MB Kit of 3 Heat Sink Package OCZ3P1600EB4GK 4096MB Kit of 2 Heat Sink Package OCZ3SOU16004GK 4096MB Kit of 2 Heat Sink Package OCZ3X16004GK i Heat Sink Package OCZ3G1600LV6GK 6144MB Kit of 3 WA160UX6G9 6144MB Kit of 3 KTG2G1600PG3 2048MB ASUS P7P55 LX DDR3 1333 MHz capability Vendor Part No AD31333001GOU 1024MB Chip Brand A Data DIMM socket support optinal A Bt d Chip NO Voltage AD30908C8D 151C E0906 AD31333G001GOU 3072MB Kit of 3 N A Heat Sink Package AD31333002GOU 2048MB A Data AD30908C8D 151C E0903 AD31333G002GMU 2048MB N A Heat Sink Package 78 A1GC6 9L1 2048MB Apacer AM5D5808AEWSBG0908D CM3X1024 1333C9DHX 1024MB N A Heat Sink Package CM3X1024 1333C9 1024MB N A Heat Sink Package TR3X3G1333C9 G 3072MB Kit of 3 N A Heat Sink Package TR3X3G1333C9 G 3072MB Kit of 3 N A Heat Sink Package TR3X3G1333C9 3072MB Kit of 3 N A Heat Sink Package CM3X1024 1333C9DHX 1024MB Corsair Heat Sink Package CM3X2048 1333C9
35. VOID EXPOSURE TO BEAM Never dispose of the battery in fire It could explode and release harmful substances into the environment Never dispose of the battery with your regular household waste Take it to a hazardous material collection point Never replace the battery with an incorrect battery type RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE DISPOSE OF USED BATTERIES ACCORDING TO THE ABOVE BATTERY RELATED INSTRUCTIONS vii viii Operation safety Before installing the motherboard and adding devices on it carefully read all the manuals that came with the package Before using the product ensure that all cables are correctly connected and the power cables are not damaged If you detect any damage contact your dealer immediately To avoid short circuits keep paper clips screws and staples away from connectors slots sockets and circuitry Avoid dust humidity and temperature extremes Do not place the product in any area where it may become wet This motherboard should only be used in environments with ambient temperatures between LER 5 C 41 F and 40 C 104 F Place the product on a stable surface If you encounter technical problems with the product contact a qualified service technician or your retailer About this guide This user guide contains the information you need when installing and configuring the motherboard How this guide is organized This guide co
36. Z XMP 2048MB Kitof2 SS Heat Sink Package CM3X2G1800C8D 2048MB DS Heat Sink Package OCZ3P18004GK 4096MB Kit of 2 DS Heat Sink Package 8 8 8 27 1 9V QCZ3P18004GK 4096MB Kit of 2 DS Heat Sink Package 8 8 8 27 1 9V TX1800KLU 2GK 1024MB Heat Sink Package Part No Voltage DIMM socket support Optional A AD31600E002GU 2048MB Heat Sink Package 1 75 1 85V AD31600X002GMU 4096MB Kit of 2 Heat Sink Package 1 75 1 85V CM3X1G1600C9DHX 2048MB Kit of 2 Heat Sink Package 1 8V CM3X2G1600C9DHX 2048MB Heat Sink Package 1 80V CM3X2G1600C9DHX 2048MB Heat Sink Package TR3X6G1600C8 G XMP 6144MB Kit of 3 Heat Sink Package TR3X6G1600C8D G XMP 6144MB Kit of 3 Heat Sink Package TR3X6G1600C9 G XMP 6144MB Kit of 3 Heat Sink Package TR3X6G1600C8D G XMP 6144MB Kit of 3 Heat Sink Package BL12864BA1608 8SFB XMP 3072MB Kit of 3 Heat Sink Package BL12864BE2009 8SFB3 EPP 3072MB Kit of 3 Heat Sink Package BL25664BN1608 16FF XMP 6144MB Kit of 3 Heat Sink Package BL25664TB1608 K16SF XMP 6144MB Kit of 3 Heat Sink Package BL25664TG1608 K16SF XMP 6144MB Kit of 3 Heat Sink Package BL25664TR1608 K16SF XMP 6144MB Kit of 3 Heat Sink Package F3 12800CL9D 2GBNQ 2048MB Kit of 2 Heat Sink Package 1 5V 1 6V F3 12800CL8T 6GBHK 2048MB Heat Sink Package 1 6 1 65 F3 12800CL8T 6GBPI XMP 6144MB Kit of 3 Heat Sink Package 1 6 1 65V F3 12800CL9T 6GBNQ 6144MB Kit of 3 Heat Sink Package 1 5V 1 6V GV34GB1600C8DC 2048MB Heat Sink Package 1 6
37. able on the next page for the function of the audio ports in 2 4 6 or 8 channel configuration ASUS P7P55 LX 1 23 1 24 Audio 2 4 6 or 8 channel configuration Headset 2 channel 4 channel 6 channel 8 channel Light Blue Line In Line in Line in Line in Lime Pink Black Gray 10 11 12 13 14 1 11 Line Out Front Speaker Out Mic In Front Speaker Out Front Speaker Out Mic in Mic in Orange Center Subwoofer Center Subwoofer Rear Speaker Out Rear Speaker Out Rear Speaker Out Side Speaker Out USB 2 0 ports 1 and 2 These two 4 pin Universal Serial Bus USB ports are available for connecting USB 2 0 devices USB 2 0 ports 3 and 4 These two 4 pin Universal Serial Bus USB ports are available for connecting USB 2 0 devices USB 2 0 ports 5 and 6 These two 4 pin Universal Serial Bus USB ports are available for connecting USB 2 0 devices Optical S PDIF Out port This port connects an external audio output device via an optical S PDIF cable USB 2 0 ports 7 and 8 These two 4 pin Universal Serial Bus USB ports are available for connecting USB 2 0 devices PS 2 Keyboard port purple This port is for a PS 2 keyboard 2 Internal connectors Front panel audio connector 10 1 pin AAFP This connector is for a chassis mounted front panel audio I O module that supports either HD Audio or legacy AC 97 audio standard Connect one end of the front panel audio I O module cable to thi
38. board and hardware devices on it check the items in your package with the list below 1 2 Package contents Check your motherboard package for the following items Motherboard ASUS P7P55 LX motherboard Cables 2 x Serial ATA 3 0Gb s cables 1 x Ultra DMA 133 100 66 cable Accessories 1 x UO shield Application DVD ASUS motherboard support DVD Documentation User Manual P If any of the above items is damaged or missing contact your retailer 1 3 Special features 1 3 1 Product highlights Intel LGA1156 Lynnfield Processor Ready This motherboard supports the latest Intel Lynnfield processors in LGA1156 package which has memory and PCI Express controller integrated to support 2 channel 4 DIMMs DDR3 memory and 16 PCI Express 2 0 lanes providing great graphics performance Intel Lynnfield processor is one of the most powerful and energy efficient CPU in the world ASUS P7P55 LX 1 1 side o 1200 ons 2200 05 A qS PDIF 1000M 1 3 2 Intel P55 The Intel P55 Express Chipset is the latest one chipset design to support the latest 1156 socket Intel Core i7 Core i5 processors Intel P55 provides improved performance by utilizing serial point to point links allowing increased bandwidth and stability ATI Quad GPU CrossFireX support P7P55 LX brings you the ATI Quad GPU CrossFireX support The motherboard features the most powerful Intel P55 platfo
39. clock Tuner item to Manual D O C P or X M P BCLK Frequency XXX Allows you to adjust the Internal Base Clock BCLK Use the lt gt and lt gt keys to adjust the value You can also type the desired value using the numeric keypad The values range from 80 to 500 PCIE Frequency Auto Allows you to set the PCI Express frequency Use the lt gt and lt gt keys to adjust the PCIE frequency Xtreme Phase Full Power Mode Auto Configuration options Auto Disabled 2 4 6 DRAM Frequency Auto Allows you to set the DDR3 operating frequency Configuration options Auto DDR3 800MHz DDR3 1066MHz DDR3 1333MHz The DRAM Frequency configuration options vary with the BCLK Frequency item settings Selecting a very high DRAM frequency may cause the system to become unstable If this happens revert to the default setting 2 4 7 QPI Frequency Auto Allows you to set the QPI operating frequency Configuration options Auto 4270MHz 4800MHz 2 4 8 DRAM Timing Control Auto The items in this menu allow you to set the DRAM timing control features VA The configuration options for some of the following items vary depending on the DIMMs you install on the motherboard 1st Information 7 7 7 20 4 60 8 5 20 The values vary depending on your settings of the following sub items DRAM CAS Latency Auto Configuration options Auto 3 DRAM Clock 4 DRAM Clock 10 DRAM Clock 11 DRAM Clock DRAM RAS
40. damage the CPU permanently and setting a low VCore voltage may make the system unstable ASUS P7P55 LX 2 4 11 IMC Voltage Auto Allows you to set the CPU Integrated Memory Controller voltage The values range from 1 1V to 1 45V with a 0 05V interval 2 4 12 CPU PLL Voltage Auto Allows you to set the CPU PLL voltage The values range from 1 8V to 2 1V with a 0 1V interval 2 4 13 PCH Voltage Auto Allows you to set the Platform Controller Hub voltage The values range from 1 05V to 1 15V with a 0 10V interval The system may need better cooling system to work stably under high voltage settings 2 4 14 DRAM Voltage Auto Allows you to set the DRAM voltage The values range from 1 2V to 2 2V with a 0 05V or 0 1V interval From 1 5V to 1 7V the interval is 0 05V According to Intel CPU spec DIMMs with voltage requirement over 1 65V may damage the CPU permanently We recommend you install the DIMMs with the voltage requirement below 1 65V 2 4 15 Load Line Calibration Auto Auto Automatic configuration Disabled Follow Intel specifications Chapter 2 BIOS information 2 17 2 18 2 5 Advanced menu The Advanced menu items allow you to change the settings for the CPU and other system devices Be cautious when changing the settings of the Advanced menu items Incorrect field values can cause the system to malfunction BIOS SETUP UTILITY Main Ai Tweaker Advanced Power B
41. dicates that the product electrical and electronic equipment should not be placed in municipal waste Check local regulations for disposal of electronic products DO NOT throw the mercury containing button cell battery in municipal waste This symbol of the crossed out wheeled bin indicates that the battery should not be placed in municipal waste Safety information Electrical safety To prevent electric shock hazard disconnect the power cable from the electric outlet before relocating the system When adding or removing devices to or from the system ensure that the power cables for the devices are unplugged before the signal cables are connected If possible disconnect all power cables from the existing system before you add a device Before connecting or removing signal cables from the motherboard ensure that all power cables are unplugged Seek professional assistance before using an adapter or extension cord These devices could interrupt the grounding circuit Ensure that your power supply is set to the correct voltage in your area If you are not sure about the voltage of the electrical outlet you are using contact your local power company If the power supply is broken do not try to fix it by yourself Contact a qualified service technician or your retailer The optical S PDIF is an optional component may or may not be included in your motherboard and is defined as a CLASS 1 LASER PRODUCT INVISIBLE LASER RADIATION A
42. ding or removing expansion cards Failure to do so may cause you physical injury and damage motherboard components 1 8 1 Installing an expansion card To install an expansion card 1 Before installing the expansion card read the documentation that came with it and make the necessary hardware settings for the card 2 Remove the system unit cover if your motherboard is already installed in a chassis 3 Remove the bracket opposite the slot that you intend to use Keep the screw for later use 4 Align the card connector with the slot and press firmly until the card is completely seated on the slot 5 Secure the card to the chassis with the screw you removed earlier 6 Replace the system cover 1 8 2 Configuring an expansion card After installing the expansion card configure it by adjusting the software settings 1 Turn on the system and change the necessary BIOS settings if any See Chapter 2 for information on BIOS setup 2 Assign an IRQ to the card 3 Install the software drivers for the expansion card A When using PCI cards on shared slots ensure that the drivers support Share IRQ or that the cards do not need IRQ assignments Otherwise conflicts will arise between the two PCI groups making the system unstable and the card inoperable 1 8 3 PCI slots The PCI slots support cards such as a LAN card SCSI card USB card and other cards that comply with PCI specifications 1 8 4 PCI Express x1 slots
43. e to this connector The IDE LED lights up or flashes when data is read from or written to the HDD System warning speaker 4 pin SPEAKER This 4 pin connector is for the chassis mounted system warning speaker The speaker allows you to hear system beeps and warnings S ATX power button soft off button 2 pin PWRSW This connector is for the system power button Pressing the power button turns the system on or puts the system in sleep or soft off mode depending on the BIOS settings Pressing the power switch for more than four seconds while the system is ON turns the system OFF Reset button 2 pin RESET This 2 pin connector is for the chassis mounted reset button for system reboot without turning off the system power ASUS P7P55 LX 1 29 1 30 1 12 Software support 1 12 1 Installing an operating system This motherboard supports Windows XP 64 bit XP Vista 64 bit Vista 7 64 bit 7 Operating Systems OS Always install the latest OS version and corresponding updates to maximize the features of your hardware YA Motherboard settings and hardware options vary Refer to your OS documentation for detailed information Ensure that you install Windows XP Service Pack 3 or later versions Windows Vista Service Pack 1 or later versions before installing the drivers for better compatibility and system stability 1 12 2 Support DVD information The Support DVD that comes with the motherboard package contains the drivers
44. e BIOS Updater aN Ensure that the USB flash drive is not write protected and has at least 1024KB free space 1 to save the file At the FreeDOS prompt type bupdater o filename and press lt Enter gt D gt bupdater oOLDBIOS1 rom Filename Extension The filename is any user assigned filename with no more than eight alphanumeric characters for the filename and three alphanumeric characters for the extension The BIOS Updater backup screen appears indicating the BIOS backup process When BIOS backup is done press any key to return to the DOS prompt ASUS P7P55 LX ASUSTek BIOS Updater for DOS V1 00b 09 06 22 FLASH TYPE MANGN25NUG05A Current ROM Update ROM BOARD FEIER BOARD Unknown VER 0804 VER Unknown DATE 09 03 2009 DATE Unknown PATH HEN BIOS backup is done Press any key to continue Note EZ BIOS Updating the BIOS file To update the BIOS file using BIOS Updater 1 Atthe FreeDOS prompt type bupdater pc g and press lt Enter gt gt bupdater pc g 2 The BIOS Updater screen appears as below ASUSTek BIOS Updater for DOS V1 00b 09 06 22 FLASH TYPE MXIGE2BETSUSE Current ROM Update ROM BOARD EIERE BOARD Unknown VER 0804 VER Unknown DATE 09 08 2009 DATE Unknown PATH HEN A P7P55 LX ROM 2097152 2009 09 03 17 30 48 Note Enter Select or Load Tab Switch V Dri nfo Up Down Home End Move B Backup Esc Exi Press lt Tab gt to switch between
45. ed by circles to secure the motherboard to the chassis Do not overtighten the screws Doing so can damage the motherboard EHI De malala mala n ee ope Place this side towards the rear of the chassis al Se P7P55 LX Chapter 1 Product introduction 1 5 3 Motherboard layout 0 0000 O o 21 8cm 8 6in Le gt samt CPU FAN PWR FAN Kems IT an EI tr rm Ra DEEN nl USB78 GU Ha OO E leni ATX12V xls hala oo snr o 3135 313 CO Bis 138113 CO E elle CO s s ells OO ajaj lalla sis sis aia amp USB34 2 8 E Elle m BE BAUE 8 Sl a z gZ g S a LAN1 USB12 ayo lao D CHA FAN AUDIO o Q
46. ermined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna ncrease the separation between the equipment and receiver Connect the equipment to an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help 4 The use of shielded cables for connection of the monitor to the graphics card is required to assure compliance with FCC regulations Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate this equipment Canadian Department of Communications Statement This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications This class B digital apparatus complies with Canadian ICES 003 REACH Complying with the REACH Registration Evaluation Authorisation and Restriction of Chemicals regulatory framework we published the chemical substances in our products at ASUS REACH website at http green asus com english REACH htm DO NOT throw the motherboard in municipal waste This product has been designed to enable proper reuse of parts and recycling This symbol of the crossed out wheeled bin in
47. ey can be used for this operation Load Setup Defaults Pressing lt Esc gt does not immediately exit this menu Select one of the options from this menu or lt F10 gt from the legend bar to exit Exit amp Save Changes Once you are finished making your selections choose this option from the Exit menu to ensure the values you selected are saved to the CMOS RAM An onboard backup battery sustains the CMOS RAM so it stays on even when the PC is turned off When you select this option a confirmation window appears Select Ok to save changes and exit Exit amp Discard Changes Select this option only if you do not want to save the changes that you made to the Setup program If you made changes to fields other than System Date System Time and Password the BIOS asks for a confirmation before exiting Discard Changes This option allows you to discard the selections you made and restore the previously saved values After selecting this option a confirmation appears Select Ok to discard any changes and load the previously saved values Load Setup Defaults This option allows you to load the default values for each of the parameters on the Setup menus When you select this option or if you press lt F5 gt a confirmation window appears Select Ok to load default values Select Exit amp Save Changes or make other changes before saving the values to the non volatile RAM ASUS P7P55 LX
48. g SATA RAID 0 1 5 and 10 VIA VT6415 PATA controller 1x Ultra DMA 133 100 66 for up to 2 PATA devices Realtek RTL8112L Gigabit LAN controller featuring Al NET2 VIA VT1708S 8 channel High Definition Audio CODEC Optical S PDIF out port at back I O Supports Jack detection and Multi streaming ASUS Noise Filter Supports up to 14 USB 2 0 1 1 ports 6 ports at mid board 8 ports at the back panel continued on the next page P7P55 LX specifications summary ASUS unique features ASUS exclusive overclocking features Back panel I O ports ASUS Exclusive Overclocking Features ASUS TurboV ASUS Turbo Key ASUS Exclusive Features MemOK ASUS EPU Express Gate ASUS Quiet Thermal Solution ASUS Fanless Design Stylish Heatsink Solution ASUS Fan Xpert ASUS EZ DIY ASUS Q DIMM ASUS O C Profile ASUS CrashFree BIOS 3 ASUS EZ Flash 2 ASUS My Logo 2 Multi language BIOS Precision Tweaker 2 vCore Adjustable CPU voltage at 0 00625V increment vIMC Adjustable IMC voltage at 0 05V increment vDRAM Bus 11 step DRAM voltage control vPCH 2 step chipset voltage control vCPU PLL 4 step reference voltage control SFS Stepless Frequency Selection Internal Base Clock tuning from 80 MHz up to 500 MHz at 1MHz increment PCI Express frequency tuning from 100MHz up to 150MHz at 1MHz increment Overclocking Protection ASUS C P R CPU Parameter Recall 1 x PS 2 keyboard port Purple 1
49. he DIMM sockets You may install varying memory sizes in Channel A and Channel B The system maps the total size of the lower sized channel for the dual channel configuration Any excess memory from the higher sized channel is then mapped for single channel operation Due to Intel spec definition X M P DIMMs are supported for one DIMM per channel only According to Intel CPU spec DIMM voltage below 1 65V is recommended to protect the CPU According to Intel CPU spec CPUs with a core frequency of 2 66GHz support the maximum DIMM frequency of up to DDR3 1333 To use DIMMs of a higher frequency with a 2 66GHz CPU enable the DRAM O C Profile feature in BIOS Refer to section 2 4 hi Overclock Tuner for details Always install DIMMs with the same CAS latency For optimum compatibility we recommend that you obtain memory modules from the same vendor Due to the memory address limitation on 32 bit Windows OS when you install 4GB or more memory on the motherboard the actual usable memory for the OS can be about 3GB or less For effective use of memory we recommend that you do any of the following Use a maximum of 3GB system memory if you are using a 32 bit Windows OS Install a 64 bit Windows OS when you want to install 4GB or more on the motherboard This motherboard does not support DIMMs made up of 512Mb 64MB chips or less The default memory operation frequency is dependent on its Serial Presence Detect SPD which
50. ings Configuration Quick Boot Enabled Enabling this item allows the BIOS to skip some power on self tests POST while booting to decrease the time needed to boot the system When this item is set to Disabled BIOS performs all the POST items Configuration options Disabled Enabled Full Screen Logo Enabled Enables or disables the full screen logo display feature Configuration options Disabled Enabled PF Set this item to Enabled to use the ASUS MyLogo2 feature AddOn ROM Display Mode Force BIOS Sets the display mode for option ROM Configuration options Force BIOS Keep Current Bootup Num Lock On Selects the power on state for the NumLock Configuration options Off On Wait for FU If Error Enabled When this item is set to Enabled the system waits for the F1 key to be pressed when error occurs Configuration options Disabled Enabled Hit DEL Message Display Enabled When this item is set to Enabled the system displays the message Press DEL to run Setup during POST Configuration options Disabled Enabled 2 7 3 Security The Security menu items allow you to change the system security settings Select an item then press Enter to display the configuration options Change Supervisor Password Select this item to set or change the supervisor password The Supervisor Password item on top of the screen shows the default Not Installed After you set a password this item shows Instal
51. isables this function ASUS P7P55 LX Max CPUID Value Limit Disabled Enabled Allows legacy operating systems to boot even without support for CPUs with extended CPUID functions Disabled Disables this function Intel R Virtualization Tech Enabled Enabled Allows a hardware platform to run multiple operating systems separately and simultaneously enabling one system to virtually function as several systems Disabled Disables this function CPU TM function Enabled Enabled Enables the overheated CPU to throttle its clock speed to cool down Disabled Disables this function Execute Disable Bit Capability Enabled Enabled Enables the No Execution Page Protection Technology Disabled Forces the XD feature flag to always return to zero 0 Intel R HT Technology Enabled Enabled Enables the Intel Hyper Threading Technology Disabled Only one thread per activated CPU core is enabled Active Processor Cores All All Activate all CPU cores in the processor package 1 Activate only 1 CPU core in the processor package 2 Activate 2 CPU cores in the processor package A20M Disabled Enabled Legacy OSes and APs may need this function enabled Disabled Disables this function Intel R SpeedStep TM Tech Enabled Enabled The CPU speed is controlled by the operating system Disabled The CPU runs at its default speed Intel R TurboMode tech Enabled Enabled Allows processor co
52. le from the ASUS website at www asus com To update the BIOS using EZ Flash 2 1 Insert the USB flash disk that contains the latest BIOS file to the USB port then launch EZ Flash 2 in any of these two ways Press Alt F2 during POST Enter the BIOS setup program Go to the Tools menu to select EZ Flash 2 and press Enter to enable it Press Tab to switch between drives until the correct BIOS file is found ASUSTek EZ Flash 2 BIOS ROM Utility V4 06 FLASH TYPE REEGELE BOARD 00 ns BOARD UNKNOWN VER 0304 H 00 B 03 VER Unknown DATE 097 0872009 DATE Unknown PATH EN paaa Select or Load Tab Switch V Drive Info paaa Move B Backup ESC Exit 2 When the correct BIOS file is found EZ Flash 2 performs the BIOS update process and automatically reboots the system when done RN This function supports USB flash disks with FAT 32 16 format and single partition only DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure 2 2 ASUS P7P55 LX 2 1 3 ASUS CrashFree BIOS The ASUS CrashFree BIOS is an auto recovery tool that allows you to restore the BIOS file when it fails or gets corrupted during the updating process You can restore a corrupted BIOS file using the motherboard support DVD or a removable device that contains the updated BIOS file A Before using this utility rename the BIOS file in the removable device into P7P55LX ROM
53. led To set a Supervisor Password 1 Select the Change Supervisor Password item and press lt Enter gt 2 In the password box key in a password containing up to six letters or numbers or both then press lt Enter gt 3 Confirm the password when prompted The message Password Installed appears after you successfully set your password To change the supervisor password follow the same steps as in setting a supervisor password To clear the supervisor password select the Change Supervisor Password then press lt Enter gt twice The message Password uninstalled appears A If you forget your BIOS password you can clear it by erasing the CMOS Real Time Clock RTC RAM See section 1 9 Jumpers for information on how to erase the RTC RAM Chapter 2 BIOS information 2 25 2 26 After you have set a supervisor password the other items appear to allow you to change other security settings User Access Level Full Access This item allows you to select the access restriction to the Setup items Configuration options No Access View Only Limited Full Access No Access prevents user access to the Setup utility View Only allows access but does not allow change to any field Limited allows changes only to selected fields such as Date and Time Full Access allows viewing and changing all the fields in the Setup utility Change User Password Select this item to set or change the user password The User Password item on to
54. n means that you must press the enclosed key Example lt Enter gt means that you must press the Enter or Return key lt Key1 gt lt Key2 gt lt Key3 gt If you must press two or more keys simultaneously the key names are linked with a plus sign Example lt Ctrl gt lt Alt gt lt D gt P7P55 LX specifications summary LGA1156 socket for Intel Core i7 Core i5 processors Supports Intel Turbo Boost Technology Refer to www asus com for Intel CPU support list Chipset Intel P55 Express Chipset Memory Dual channel memory architecture 4 x 240 pin DIMM slots support maximum 16GB unbuffered non ECC DDR3 2200 0 C 1600 1333 1066MHz memory modules Supports Intel Extreme Memory Profile XMP Hyper DIMM support is subject to the physical characteristics of individual CPUs Refer to www asus com for the latest Memory QVL Qualified Vendors List When you install a total memory of 4GB or more Windows 32 bit operating system may only recognize less than 3GB We recommend a maximum of 3GB system memory if you are using a Windows 32 bit operating system Expansion slots 1 x PCI Express 2 0 x16 slot single at x16 1 x PCI Express 2 0 x16 slot at x4 mode 2 5GT s 2 x PCI Express 2 0 x1 slots 2 5GT s 3 x PCI slots Multi GPU Support Supports ATI Quad GPU CrossFireX technology Storage Intel P55 Express Chipset 6x SATA3 0 Gb s ports Intel Matrix Storage supportin
55. ne DIMM per channel only ASUS exclusively provides two DDR3 1600 DIMM support for each memory channel Visit the ASUS website at www asus com for the latest QVL ASUS P7P55 LX 1 17 1 18 1 7 3 Installing a DIMM Ensure to unplug the power supply before adding or removing DIMMs or other system components Failure to do so may cause severe damage to both the motherboard and the components To install a DIMM DIMM notch 1 Unlock a DIMM socket by pressing the retaining clip outward 2 Align a DIMM on the socket such that the notch on the DIMM matches the break on the socket Unlocked retaining clip IN A DIMM is keyed with a notch so that it fits in only one direction DO NOT force a DIMM into a socket to avoid damaging the DIMM 3 Firmly insert the DIMM into the socket until the retaining clip snaps back in place and the DIMM is properly seated Locked Retaining Clip 1 7 4 Removing a DIMM Follow these steps to remove a DIMM 1 Press the retaining clip outward to unlock the DIMM Support the DIMM lightly with your fingers when pressing the retaining clip The DIMM might get damaged when it flips out with extra force 2 Remove the DIMM from the socket Chapter 1 Product introduction 1 8 Expansion slots In the future you may need to install expansion cards The following sub sections describe the slots and the expansion cards that they support 4 Unplug the power cord before ad
56. nection cannot be made on the first try Turning an external modem off and then back on while the computer is off causes an initialization string that turns the System power on 2 22 ASUS P7P55 LX Power On By PCI Devices Disabled Disabled Disables the PME to wake up from S5 by PCI devices Enabled Allows you to turn on the system through a PCI LAN or modem card This feature requires an ATX power supply that provides at least 1A on the 5VSB lead Power On By PCIE Devices Disabled Allows you to enable or disable the PCIE devices to generate a wake event Disabled Disables the PCIE devices to generate a wake event Enabled Enables the PCIE devices to generate a wake event Power On By PS 2 Keyboard Disabled Disabled Disables the Power On by a PS 2 keyboard Enabled Sets specific keys on the PS 2 keyboard to turn on the system This feature requires an ATX power supply that provides at least 1A on the 5VSB lead Power On By PS 2 Mouse Disabled Disabled Disables the Power On by a PS 2 mouse Enabled Enables the Power On by a PS 2 mouse This feature requires an ATX power supply that provides at least 1A on the 5VSB lead 2 6 5 Hardware Monitor CPU MB Temperature xxx C xxx F The onboard hardware monitor automatically detects and displays the CPU and motherboard temperatures Select Ignored if you do not wish to display the detected temperatures CPU Chassis Power Fan Speed xxxxRPM or Ign
57. ntains the following parts Chapter 1 Product introduction This chapter describes the features of the motherboard and the new technology it supports Chapter 2 BIOS information This chapter tells how to change system settings through the BIOS Setup menus Detailed descriptions of the BIOS parameters are also provided Conventions used in this guide To ensure that you perform certain tasks properly take note of the following symbols used throughout this manual i DANGER WARNING Information to prevent injury to yourself when trying to j Y complete a task 0 CAUTION Information to prevent damage to the components when trying to complete a task IMPORTANT Instructions that you MUST follow to complete a task YA NOTE Tips and additional information to help you complete a task Where to find more information Refer to the following sources for additional information and for product and software updates 1 ASUS websites The ASUS website provides updated information on ASUS hardware and software products Refer to the ASUS contact information 2 Optional documentation Your product package may include optional documentation such as warranty flyers that may have been added by your dealer These documents are not part of the standard package Typography Bold text Indicates a menu or an item to select Italics Used to emphasize a word or a phrase lt Key gt Keys enclosed in the less than and greater than sig
58. onnector Do not forget to connect the CPU fan connector Hardware monitoring errors can occur if you fail to plug this connector 1 6 3 Uninstalling the CPU heatsink and fan To uninstall the CPU heatsink and fan 1 Disconnect the CPU fan cable from the connector on the motherboard 2 Rotate each fastener counterclockwise 3 Pull up two fasteners at a time in a diagonal sequence to disengage the heatsink and fan assembly from the motherboard 112 Chapter 1 Product introduction 4 Carefully remove the heatsink and fan assembly from the motherboard 5 Rotate each fastener clockwise to ensure correct orientation when reinstalling 1 7 System memory 1 7 1 Overview The motherboard comes with four Double Data Rate 3 DDR3 Dual Inline Memory Modules DIMM sockets A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched differently to prevent installation on a DDR2 DIMM socket DDR3 modules are developed for better performance with less power consumption The figure illustrates the location of the DDR3 DIMM sockets DIMM A1 DIMM B1 DIMM A2 DIMM B2 Channel Sockets Channel A DIMM A1 and DIMM A2 Channel B DIMM B1 and DIMM B2 P7P55 LX 240 pin DDR3 DIMM sockets ASUS P7P55 LX 1 13 1 7 2 Memory configurations You may install 512MB 1GB 2GB and 4GB unbuffered non ECC DDR3 DIMMs into t
59. oot Tools Exit p CPU Configuration Configure CPU gt North Bridge Configuration pb Onboard Devices Configuration p USB Configuration gt PCIPnP Intel VT d Disabled Select Screen L Select Item Enter Go to Sub Screen F1 General Help F10 Save and Exit ESC Exit v02 61 C Copyright 1985 2009 American Megatrends Inc 2 5 1 CPU Configuration The items in this menu show the CPU related information that the BIOS automatically detects ON The items shown in this screen may be different due to the CPU you installed CPU Ratio Setting Auto Allows you to adjust the ratio between CPU Core Clock and BCLK Frequency Use the lt gt and lt gt keys to adjust the value The valid value ranges differently according to your CPU model C1E Support Enabled Enabled Enables the C1E support function This item should be enabled in order to enable the Enhanced Halt Sate Disabled Disables this function Hardware Prefetcher Enabled Enabled Enables the Hardware Prefetcher function This item should be enabled in order to enable the L2 cache MLC Streamer Prefetcher for tuning performance of the specific application Disabled Disables this function Adjacent Cache Line Prefetcher Enabled Enabled Enables the Adjacent Cache Line Prefetcher function This item should be enabled in order to enable the L2 cache MLC Spatial Prefetcher for tuning performance of the specific application Disabled D
60. ored N A The onboard hardware monitor automatically detects and displays the CPU chassis and power fan speed in rotations per minute RPM If the fan is not connected to the motherboard the field shows N A Select Ignored if you do not wish to display the detected Speed CPU Q Fan Control Disabled Disabled Disables the CPU Q Fan control feature Enabled Enables the CPU Q Fan control feature CPU Fan Profile Standard This item appears only when you enable the CPU Q Fan Control feature and allows you to set the appropriate performance level of the CPU fan Standard Sets to Standard to make the CPU fan automatically adjust depending on the CPU temperature Silent Sets to Silent to minimize the fan speed for quiet CPU fan operation Turbo Set to Turbo to achieve maximum CPU fan speed Chassis Q Fan Control Disabled Disabled Disables the Chassis Q Fan control feature Enabled Enables the Chassis Q Fan control feature Chapter 2 BIOS information 2 23 Chassis Fan Profile Standard This item appears only when you enable the Chassis Q Fan Control feature and allows you to set the appropriate performance level of the chassis fan Standard Sets to Standard to make the chassis fan automatically adjust depending on the chassis temperature Silent Sets to Silent to minimize the fan speed for quiet chassis fan operation Turbo Set to Turbo to achieve maximum chassis fan speed CPU Voltage
61. p Turbo Key can boost performances without interrupting ongoing work or games with just one touch Chapter 1 Product introduction Muert ASUS P7P55 LX ASUS TurboV Feel the adrenaline rush of real time OC now a reality with the ASUS TurboV This easy OC tool allows you to overclock without exiting or rebooting the OS and its user friendly interface makes overclock with just a few clicks away Moreover the ASUS OC profiles in TurboV provides the best O C settings in different scenarios MemOK Memory compatibility is among the top concerns during computer upgrades Worry no more MemOK is the fastest memory booting solution today This remarkable memory rescue tool requires nothing but a push of a button to patch memory issues and get your system up and running in no time The technology is able to determine failsafe settings that can dramatically improve your system booting success ASUS EPU ASUS EPU is a unique power saving technology that detects the current system loadings and adjusts the power consumption in real time ASUS Express Gate Express Gate is an ASUS exclusive OS which lets you instantly access the Internet and key applications before entering the Windows OS ASUS Express Gate supports installation on SATA HDDs USB HDDs and flash drives with at least 1 2GB free disk space When installing it on USB HDDs or flash drives connect the drives to the motherboard USB port before turning on the compu
62. p of the screen shows the default Not Installed After you set a password this item shows Installed To set a User Password 1 Select the Change User Password item and press lt Enter gt 2 In the password box key in a password containing up to six letters or numbers or both then press lt Enter gt 3 Confirm the password when prompted The message Password Installed appears after you set your password successfully To change the user password follow the same steps as in setting a user password Clear User Password Select this item to clear the user password Password Check Setup When this item is set to Setup BIOS checks for user password when accessing the Setup utility When this item is set to Always BIOS checks for user password both when accessing Setup and booting the system Configuration options Setup Always 2 8 Tools menu The Tools menu items allow you to configure options for special functions Select an item then press lt Enter gt to display the submenu BIOS SETUP UTILITY Boot Main Ai Tweaker Advanced Power Exit Tools Settings b b AI NET 2 Express Gate Auto Enter OS Timer 10 Seconds Reset User Data No ASUS EZ Flash 2 ASUS P7P55 LX 2 8 1 ASUS O C Profile This item allows you to store or load multiple BIOS settings Add Your CMOS Profile Allows you to save the current BIOS file to the BIOS Flash In the Name sub item type your profile name and press l
63. pJE0QJEUION P7P55 LX E5015 First Edition V1 September 2009 Copyright 2009 ASUSTeK Computer Inc All Rights Reserved No part of this manual including the products and software described in it may be reproduced transmitted transcribed stored in a retrieval system or translated into any language in any form or by any means except documentation kept by the purchaser for backup purposes without the express written permission of ASUSTeK Computer Inc ASUS Product warranty or service will not be extended if 1 the product is repaired modified or altered unless such repair modification of alteration is authorized in writing by ASUS or 2 the serial number of the product is defaced or missing ASUS PROVIDES THIS MANUAL AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE IN NO EVENT SHALL ASUS ITS DIRECTORS OFFICERS EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING DAMAGES FOR LOSS OF PROFITS LOSS OF BUSINESS LOSS OF USE OR DATA INTERRUPTION OF BUSINESS AND THE LIKE EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY AND ARE SUBJECT TO CHANGE AT ANY TIM
64. r in the bag that came with the component Before you install or remove any component ensure that the ATX power supply is Switched off or the power cord is detached from the power supply Failure to do so may cause severe damage to the motherboard peripherals or components Onboard LED The motherboard comes with a standby power LED that lights up to indicate that the system is ON in sleep mode or in soft off mode This is a reminder that you must shut down the system and unplug the power cable before removing or plugging in any motherboard component The illustration below shows the location of the onboard LED P oo i CH Ne m SB PWR es O C00 t ST ON OFF i Standby Power Powered Off Noa moe D om om om ASUS P7P55 LX 1 5 Motherboard overview Before you install the motherboard study the configuration of your chassis to ensure that the motherboard fits into it Ensure that you unplug the power cord before installing or removing the motherboard Failure to do so can cause you physical injury and damage motherboard components 1 5 1 Placement direction When installing the motherboard ensure that you place it into the chassis in the correct orientation The edge with external ports goes to the rear part of the chassis as indicated in the image below 1 5 2 Screw holes Place six screws into the holes indicat
65. r the socket ensuring that the gold triangle is on the bottom left corner of the socket and then fit the socket alignment keys into the CPU notches The CPU fits in only one correct orientation DO NOT force the CPU into the socket to prevent bending the connectors on the socket and damaging the CPU e af ASUS P7P55 LX 1 10 6 Apply some Thermal Interface Material to the exposed area of the CPU that the heatsink will be in contact with ensuring that it is spread in an even thin layer Some heatsinks come with pre applied thermal paste If so skip this step The Thermal Interface Material is toxic and inedible DO NOT eat it If it gets into your eyes or touches your skin wash it off immediately and seek professional medical help 7 Close the load plate A and then push down the load lever B ensuring that the front edge of the load plate slides under the retention knob C 8 Insert the load lever under the retention tab Chapter 1 Product introduction 1 6 2 Installing the CPU heatsink and fan The Intel LGA1156 processor requires a specially designed heatsink and fan assembly to ensure optimum thermal condition and performance N When you buy a boxed Intel processor the package includes the CPU fan and heatsink assembly If you buy a CPU separately ensure that you use only Intel certified multi directional heatsink and fan Your Intel LGA1156 heatsink and fan assembl
66. res to run faster than marked frequency in specific condition Disabled Disables this function Intel R C STATE Tech Disabled Enabled Allows the CPU to save more power under idle mode Enable this item only when you install a C State Technology supported CPU Disabled Disables this function C State package limit setting Auto This item appears only when you set the Intel R C STATE Tech item to Enabled We recommend that you set this item to Auto for BIOS to automatically detect the C State mode supported by your CPU Configuration options Auto C1 C3 C6 Chapter 2 BIOS information 2 19 2 5 2 North Bridge Configuration The North Bridge Configuration menu allows you to change the advanced chipset settings Memory Remap Feature Enabled Disabled Do not allow remapping of memory Enabled Allows for the segment of system memory that was previously overwritten by PCI devices to be remapped above the total physical memory 2 5 3 Onboard Devices Configuration HDA Controller Enabled Enables or disables the High Definition Audio Controller Configuration options Enabled Disabled Front Panel Type HD Audio Set the front panel audio connector AAFP mode Configuration options AC97 HD Audio Onboard LAN Enabled Enables or disables the onboard LAN Controller Configuration options Enabled Disabled Onboard LAN Boot ROM Disabled This item appears only when you enable the previous item
67. rm to optimize PCle allocation in multiple GPU configurations Expect a brand new gaming style you ve never experienced before Dual Channel DDR3 2200 0 C 1600 1333 1066 support The motherboard supports DDR3 memory that features data transfer rates of 2200 O C 1600 1333 1066 MHz to meet the higher bandwidth requirements of the latest 3D graphics multimedia and Internet applications The dual channel DDR3 architecture enlarges the bandwidth of your system memory to boost system performance Serial ATA 3Gb s technology and RAID support This motherboard supports hard drives based on the Serial ATA SATA 3Gb s storage specifications delivering enhanced salability and doubling the bus bandwidth for high speed data saving and retrieval It also supports RAID 0 RAID 1 RAID 5 and RAID 10 configurations for Serial ATA hard drives S PDIF digital sound ready This motherboard provides convenient connectivity to external home theater audio systems via the S PDIF out SONY PHILIPS Digital Interface jack It allows digital audio transfer and keeps the best signal quality Gigabit LAN solution The onboard LAN controller is a highly integrated Gb LAN controller It is enhanced with an ACPI management function to provide efficient power management for advanced operating systems Innovative ASUS features Turbo Key ASUS Turbo Key allows you to turn the PC power button into a physical overclocking button After the easy setu
68. s connector SENSE1 RETUR SENSE2 RETUR PRESENCE a 2 z 000 o o zz XS o AAFP HIT GEREG PIN 1 PIN 1 D acrcaa ECO Er s g 9 E SE s SEERS 243 e OO y O s2 2 eene 5 Z a HD audio compliant Legacy AC 97 pin definition compliant definition P7P55 LX Front panel audio connector We recommend that you connect a high definition front panel audio module to this connector to avail of the motherboard s high definition audio capability If you want to connect a high definition front panel audio module to this connector set the Front Panel Type item in the BIOS setup to HD Audio If you want to connect an AC 97 front panel audio module to this connector set the item to AC97 By default this connector is set to HD Audio See section 2 5 3 Onboard Devices Configuration for details Chapter 1 Product introduction 2 IDE connector 40 1 pin PRI EIDE The onboard IDE connector is for the Ultra DMA 133 100 66 signal cable There are three connectors on each Ultra DMA 133 100 66 signal cable blue black and gray Connect the blue connector to the motherboard s IDE connector then select one of the following modes to configure your device Drive jumper setting Mode of device s Cable connector Single device Cable Select or Master Black Master Black Cable Select Slave Gray Two devices Master Master Black or gray
69. screen fields and use the lt Up Down Home End gt keys to select the BIOS file and press lt Enter gt BIOS Updater checks the selected BIOS file and prompts you to confirm BIOS update 3 Are you sure to update BIOS Chapter 2 BIOS information 2 5 2 6 4 Select Yes and press lt Enter gt When BIOS update is done press lt ESC gt to exit BIOS Updater Restart your computer DO NOT shut down or reset the system while updating the BIOS to prevent system boot CW failure For BIOS Updater version 1 04 or later the utility automatically exits to the DOS prompt after updating BIOS Ensure to load the BIOS default settings to ensure system compatibility and stability Select the Load Setup Defaults item under the Exit menu Refer to section 2 9 Exit menu for details Ensure to connect all SATA hard disk drives after updating the BIOS file if you have disconnected them 2 2 BIOS setup program Use the BIOS Setup program to update the BIOS or configure its parameters The BIOS screens include navigation keys and brief online help to guide you in using the BIOS Setup program Entering BIOS Setup at startup To enter BIOS Setup at startup Press Delete during the Power On Self Test POST If you do not press Delete POST continues with its routines Entering BIOS Setup after POST To enter BIOS Setup after POST Press lt Ctrl gt lt Alt gt lt Del gt simultaneously Press the reset button
70. seconds 5 seconds 10 seconds 15 seconds 20 seconds 30 seconds Reset User Data No Allows you to clear Express Gate s user data Reset When setting this item to Reset ensure that you save the setting to the BIOS so that the user data will be cleared the next time you enter the Express Gate User data includes the Express Gate s settings as well as any personal information stored by the web browser such as bookmarks cookies browsing history This is useful in the rare case where corrupt settings prevent the Express Gate environment from launching properly Chapter 2 BIOS information 2 27 2 28 No Set to No to disable the Reset User Data function when entering the Express Gate YA The first time wizard will run again when you enter the Express Gate environment after clearing its settings 2 8 4 ASUS EZ Flash 2 Allows you to run ASUS EZ Flash 2 When you press lt OK gt a confirmation message appears Use the left right arrow key to select between Yes or No then press lt OK gt to confirm your choice See section 2 1 2 ASUS EZ Flash 2 for details 2 9 Exit menu The Exit menu items allow you to load the optimal or failsafe default values for the BIOS items and save or discard your changes to the BIOS items BIOS SETUP UTILITY Main Advanced Power Boot Tools xit Exit Options Exit system setup after saving the changes Exit amp Discard Changes Discard Changes F10 k
71. software applications and utilities that you can install to avail all motherboard features VA The contents of the Support DVD are subject to change at any time without notice Visit the Ai ASUS website at www asus com for updates To run the Support DVD Place the Support DVD to the optical drive The DVD automatically displays the Drivers menu if Autorun is enabled in your computer fo The following screen is for reference only ASUS InstAll Click an icon to 5 display Support DVD Intel Chipset Bie ease select items to nal motherboard information VIA Audio Driver Realtek LAN Driver ASUS EPU 4 Engine Norton Internet Security 2009 Click an item to install Z If Autorun is NOT enabled in your computer browse the contents of the Support DVD to locate the file ASSETUP EXE from the BIN folder Double click the ASSETUP EXE to run the DVD Chapter 1 Product introduction BIOS information 2 1 Managing and updating your BIOS AN Save a copy of the original motherboard BIOS file to a USB flash disk in case you need to restore the BIOS in the future Copy the original motherboard BIOS using the ASUS Update utility 2 1 1 ASUS Update utility The ASUS Update is a utility that allows you to manage save and update the motherboard BIOS in Windows environment ASUS Update requires an Internet connection either through a network or an Internet Service Provider ISP This utility is available in the support DVD
72. t Enter gt and then choose a profile number to save your CMOS settings in the Save to sub item Load CMOS Profiles Allows you to load the previous BIOS settings saved in the BIOS Flash Press lt Enter gt and choose a profile to load Start O C Profile Allows you to run the utility to save and load CMOS Press lt Enter gt to run the utility This function can support devices such as a USB flash disk with FAT 32 16 format and single partition only DO NOT shut down or reset the system while updating the BIOS to prevent the system boot failure We recommend that you update the BIOS file only coming from the same memory CPU configuration and BIOS version Only the CMO file can be loaded 2 8 2 AINET 2 Check Realtek LAN cable Disabled Enables or disables checking of the Realtek LAN cable during the Power On Self Test POST Configuration options Disabled Enabled 2 8 3 Express Gate Auto Allows you to enable or disable the ASUS Express Gate feature The ASUS Express Gate feature is a unique instant on environment that provides quick access to the Internet browser and Skype Configuration options Disabled Enabled Auto Enter OS Timer 10 Seconds Sets countdown duration that the system waits at the Express Gate s first screen before starting Windows or other installed OS Choose Prompt User to stay at the first screen of Express Gate for user action Configuration options Prompt User 1 second 3
73. ter The actual boot time depends on the system configuration ASUS Express Gate supports file uploading from SATA HDDs ODDs and USB drives It supports file downloading to USB drives only ASUS Express Gate complies with the OpenGL standard Refer to support asus com for Express Gate source codes ASUS Fan Xpert ASUS Fan Xpert intelligently allows you to adjust both the CPU and chassis fan speeds according to different ambient temperatures caused by different climate conditions in different geographic regions and your PC s loading The built in variety of useful profiles offer flexible controls of fan speed to achieve a quiet and cool environment ASUS O C Profile The motherboard features the ASUS O C Profile that allows you to conveniently store or load multiple BIOS settings The BIOS settings can be stored in the CMOS or a separate file giving you the freedom to share and distribute your favorite settings ASUS MyLogo2 This feature allows you to convert your favorite photo into a 256 color boot logo for a more colorful and vivid image on your screen gt ASUS CrashFree BIOS 3 SESS ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to n restore a corrupted BIOS file using the bundled support DVD or USB flash disk that contains the latest BIOS file mm ASUS EZ Flash 2 RES Sg ASUS EZ Flash 2 is a utility that allows you to update the BIOS without using an OS based utility 1 ASUS AI NET2 Um ASUS
74. the submenu select the item and press lt Enter gt 2 2 6 Configuration fields These fields show the values for the menu items If an item is user configurable you can change the value of the field opposite the item You cannot select an item that is not user configurable A configurable field is enclosed in brackets and is highlighted when selected To change the value of a field select it then press Enter to display a list of options Refer to 2 2 7 Pop up window 2 2 7 Pop up window Select a menu item then press TETT Kac mm kt Tin at lt Enter gt to display a Pop up Ka window with the configuration ACPI APIC support options for that item p conima en Ge peu 2 2 8 Scroll bar A scroll bar appears on the right side of a menu screen when there are items that do not fit on the 95 2003 screen Press the Up Down Pop up window arrow keys or Page Up Page Scroll bar Down keys to display the other items on the screen 2 2 9 General help At the top right corner of the menu screen is a brief description of the selected item Auto Use ENTER TAB or i SHIFT TAB to select Disabled DOES Select Screen ASUS P7P55 LX 2 3 Main menu When you enter the BIOS Setup program the Main menu screen appears giving you an overview of the basic system information BIOS SETUP UTILITY Ai Tweaker Advanced Power Boot Tools Exit 56 38 Use ENTER TAB or System Date Thu 07 09 2009 SHIFT
75. tion 2 3 4 Storage Configuration for details 9 Serial port connector 10 1 pin COM1 This connector is for a serial COM port Connect the serial port module cable to this connector then install the module to a slot opening at the back of the system chassis COM1 a B o m jm E at J D Fer kel P7P55 LX Serial port COM1 connector KA The COM module is purchased separately 1 28 Chapter 1 Product introduction 10 System panel connector 20 8 pin PANEL This connector supports several chassis mounted functions oo Tv mi m 9 A D m gt m A PLED Ground Ground Speaker sl PLED fas 5V PANEL PIN 1 PWR Ground Reset Ground IDE_LED LIDE LED o m m Oo z m n m 4 PWRSW Requires an ATX power supply P7P55 LX System panel connector System power LED 2 pin PLED This 2 pin connector is for the system power LED Connect the chassis power LED cable to this connector The system power LED lights up when you turn on the system power and blinks when the system is in sleep mode E Hard disk drive activity LED 2 pin IDE_LED This 2 pin connector is for the HDD Activity LED Connect the HDD Activity LED cabl
76. to CASH Delay Auto Configuration options Auto 3 DRAM Clock 4 DRAM Clock 9 DRAM Clock 15 DRAM Clock DRAM RAS PRE Time Auto Configuration options Auto 3 DRAM Clock 4 DRAM Clock 9 DRAM Clock 15 DRAM Clock DRAM RAS ACT Time Auto Configuration options Auto 3 DRAM Clock 4 DRAM Clock 30 DRAM Clock 31 ASUS P7P55 LX DRAM Clock DRAM RAS to RAS Delay Auto Configuration options Auto 1 DRAM Clock 7 DRAM Clock DRAM REF Cycle Time Auto Configuration options Auto 30 DRAM Clock 36 DRAM Clock 48 DRAM Clock 60 DRAM Clock 72 DRAM Clock 82 DRAM Clock 88 DRAM Clock 90 DRAM Clock 100 DRAM Clock 110 DRAM Clock 122 DRAM Clock 132 DRAM Clock 140 DRAM Clock 150 DRAM Clock 160 DRAM Clock 170 DRAM Clock 180 DRAM Clock DRAM WRITE Recovery Time Auto Configuration options Auto 1 DRAM Clock 18 DRAM Clock DRAM READ to PRE Time Auto Configuration options Auto 1 DRAM Clock 15 DRAM Clock DRAM FOUR ACT WIN Time Auto Configuration options Auto 1 DRAM Clock 63 DRAM Clock 2nd Information 3N 255 255 The values vary depending on your settings of the following sub items DRAM Timing M Aut Configuration options Auto 1N 2N 3N DRAM Round Trip Latency on CHA Auto Auto Advance 15 Clock Advance 1 Clock Normal Delay 1 Clock Delay 15 Clock DRAM Round Trip Latency on CHB Auto Auto Advance 15
77. ttings for PCI PnP devices Plug And Play O S No When set to No BIOS configures all the devices in the system When set to Yes and if you install a Plug and Play operating system the operating system configures the Plug and Play devices not required for boot Configuration options No Yes 2 5 6 Intel VT d Disabled Enables or disables the Intel Virtualization Technology for Directed I O Configuration options Enabled Disabled 2 6 Power menu The Power menu items allow you to change the settings for the Advanced Power Management APM Select an item then press lt Enter gt to display the configuration options BIOS P UTILITY Main Ai Tweaker Advanced Power Boot Tools Exit Suspend Mode Select the ACPI state Auto used for System ACPI 2 0 Support Suspend Enabled ACPI APIC Support Enabled p APM Configuration p Hardware Monitor lt gt Select Screen thal Select Item z Change Option F1 General Help F10 Save and Exit ESC Exit v02 61 C Copyright 1985 2009 American Megatrends Inc Chapter 2 BIOS information 2 21 2 6 1 Suspend Mode Auto Allows you to select the Advanced Configuration and Power Interface ACPI state to be used for system suspend S1 POS only Sets the APCI suspend mode to S1 POS Power On Suspend S3 only Sets the APCI suspend mode to S3 STR Suspend To RAM Auto The system automatically configures the ACPI suspend mode 2 6 2 ACPI 2 0 S
78. ty tuning for successful boot mn E MemOK 2 s N87 n s pr o EH a o ca E n er O H an P7P55 LX MemOK switch N The DRAM LED also lights when the DIMM is not properly installed Turn off the system and reinstall the DIMM before using the MemOK function Press the MemOK switch under Windows OS environment will reboot the computer and start memory tuning During the tuning process the system loads and tests failsafe memory settings It takes about 30 seconds for the system to test one set of failsafe settings If the test fails the system reboots and test the next set of failsafe settings The blinking speed of the DRAM LED increases indicating different test processes If the installed DIMMs still fail to boot after the whole tuning process the DRAM LED ights continuously Replace the DIMMs with ones recommended in the Memory QVL Qualified Vendors Lists in this user manual or on the ASUS website at WWW asus com If you turn off the computer and replace DIMMs during the tuning process the system continues memory tuning after turning on the computer To stop memory tuning turn off the computer and unplug the power cord for about 5 10 seconds If your system fail to boot due to BIOS overclocking press the MemOK switch to boot and load BIOS default settings A messgae will appear during PO
79. upport Enabled Disabled When set to Disabled the system will not add additional tables as per ACPI 2 0 specifications Enabled When set to Enabled the system adds additional tables as per ACPI 2 0 Specifications 2 6 3 ACPI APIC Support Enabled Disabled When set to Disabled the system disable the Advanced Configuration and Power Interface ACPI support in the Advanced Programmable Interrupt Controller APIC Enabled When set to Enabled the ACPI APIC table pointer is included in the RSDT pointer list 2 6 4 APM Configuration Restore On AC Power Loss Power Off Power Off The system goes into off state after an AC power loss Power On The system goes into on state after an AC power loss Last State The system goes into either off or on state whatever the system state was before the AC power loss Power On By RTC Alarm Disabled Disabled Disables RTC to generate a wake event Enabled When set to Enabled the items RTC Alarm Date Days System Time will become user configurable with set values Power On By External Modems Disabled Disabled Disables to power up the computer when the external modem receives a call while the computer is in Soft off mode Enabled The computer could be powered up when the external modem receives a call while the computer is in Soft off mode The computer cannot receive or transmit data until the computer and applications are fully running Thus con
80. ve the cap back to pins 1 2 Plug the power cord and turn ON the computer Hold down the lt Del gt key during the boot process and enter BIOS setup to re enter data Except when clearing the RTC RAM never remove the cap on CLRTC jumper default position Removing the cap will cause system boot failure Ifthe steps above do not help remove the onboard battery and move the jumper again to clear the CMOS RTC RAM data After the CMOS clearance reinstall the battery You do not need to clear the RTC when the system hangs due to overclocking For system failure due to overclocking use the CPU Parameter Recall C P R feature Shut down and reboot the system then the BIOS automatically resets parameter settings to default values Due to the chipset limitation AC power off is required before you use the C P R function You must turn off and on the power supply or unplug and plug the power cord before rebooting the system Chapter 1 Product introduction 2 Keyboard power 3 pin KBPWR This jumper allows you to enable or disable the keyboard wake up feature When you set this jumper to pins 2 3 5VSB you can wake up the computer by pressing a key on the keyboard the default is the Space Bar This feature requires an ATX power supply that can supply at least 1A on the 5VSB lead and a corresponding setting in the BIOS 5V 5VSB Default mom m
81. x PS 2 mouse port Green 1 x S PDIF Out port Optical 1x LAN RJ 45 port 8 x USB 2 0 1 1 ports 8 channel audio O ports continued on the next page xi xii P7P55 LX specifications summary Internal HO connectors Manageability Accessories Support DVD Form factor 3 x USB 2 0 1 1 connectors support additional 6 USB 2 0 1 1 ports 1 x IDE connector 6 x SATA connectors 1 x CPU fan connector 1 x Chassis fan connector 1 x Power fan connector 1 x Front panel audio connector 1 x S PDIF Out header 1x CD audio in connector 1 x 24 pin EATX power connector 1 x 4 pin ATX 12V power connector 1 x System panel connector 1 x MemOK button 1x COM connector 16 Mb Flash ROM AMI BIOS PnP DMI 2 0 WfM 2 0 SM BIOS 2 5 ACPI 2 0a Multi language BIOS ASUS EZ Flash 2 ASUS CrashFree BIOS 3 WIM 2 0 DMI 2 0 WOL by PME WOR by PME PXE 1 x Ultra DMA 133 100 66 cable 2 x Serial ATA 3 0Gb s cables 1 x I O shield 1 x User Manual Drivers ASUS Utilities ASUS Update Anti virus software OEM version ATX form factor 12 in x 8 6 in 30 5 cm x 21 8 cm Specifications are subject to change without notice Product introduction 1 1 Welcome Thank you for buying an ASUS P7P55 LX motherboard The motherboard delivers a host of new features and latest technologies making it another standout in the long line of ASUS quality motherboards Before you start installing the mother
82. y comes in a push pin design and requires no tool to install Use an LGA1156 compatible CPU heatsink and fan assembly only The LGA1156 socket is incompatible with the LGA775 and LGA1366 sockets in size and dimension If you purchased a separate CPU heatsink and fan assembly ensure that you have properly applied Thermal Interface Material to the CPU heatsink or CPU before you install the heatsink and fan assembly Ensure that you have installed the motherboard to the chassis before you install the CPU fan and heatsink assembly To install the CPU heatsink and fan 1 Place the heatsink on top of the installed CPU ensuring that the four fasteners match the holes on the motherboard Orient the heatsink and fan assembly Such that the CPU fan cable is closest to the CPU fan connector 2 Push down two fasteners at a time in a diagonal sequence to secure the heatsink and fan assembly in place The type of CPU heatsink and fan assembly may differ but the installation steps and functions should remain the same The illustration above is for reference only ASUS P7P55 LX 1 11 3 Connect the CPU fan cable to the connector on the motherboard labeled CPU FAN CPU FAN pa BD p INMd NY4 Ndo NI NV3 Ndo YMd NY4 nido OND Er s O c3 o ca PTPS5 LX L F C I CG H mme m m om oh Se P7P55 LX CPU fan c

ASUS P7P55_LX Owner's Manual

Contents

Download Pdf Manuals

Related Search

Related Contents