Supermicro CSE-731D-300B computer case
Contents
1. Asia Pacific Address Tel Fax Web Site Technical Support Email Tel Super Micro Computer Inc 980 Rock Ave San Jose CA 95131 U S A 1 408 503 8000 1 408 503 8008 marketing supermicro com General Information support supermicro com Technical Support www supermicro com Super Micro Computer B V Het Sterrenbeeld 28 5215 ML s Hertogenbosch The Netherlands 31 0 73 6400390 31 0 73 6416525 sales supermicro nl General Information support supermicro nl Technical Support rma supermicro nl Customer Support Super Micro Computer Inc 4F No 232 1 Liancheng Rd Chung Ho 235 Taipei County Taiwan R O C 886 2 8226 3990 886 2 8226 3991 www supermicro com tw support supermicro com tw 886 2 8226 1900 1 3 SC731 Chassis Manual 1 5 Returning Merchandise for Service A receipt or copy of your invoice marked with the date of purchase is required be fore any warranty service will be rendered You can obtain service by calling your vendor for a Returned Merchandise Authorization RMA number When returning to the manufacturer the RMA number should be prominently displayed on the outside of the shipping carton and mailed prepaid or hand carried Shipping and handling charges will be applied for all orders that must be mailed when service is complete For faster service RMA authorizations may be requested online http www super micro com support rma Whenever2. 1 Remove the dummy cover A for optical device from the front bezel 2 Install the front bezel onto the front of the chassis to complete the installation Remove the Dummy Cover A DARKARAARARAAAAE Figure 4 12 Installing the Front Bezel SC731 Chassis Manual 4 10 Power Supply The SC731 chassis includes a 300 Watt power supply In the unlikely event that it becomes necessary to replace the power supply follow the instructions below Power Supply Figure 4 13 Removing the Power Supply Changing the Power Supply 1 Disconnect the chassis from any power source 2 Disconnect the motherboard cables 3 Remove the screws securing the power supply to the chassis which are located on the rear of the chassis Set these screws aside for later use 4 Gently lift the power supply out of the chassis 5 Replace the failed power supply with an identical power supply model 6 Secure the new power supply using the screws previously set aside 7 Plug the AC power cord back into the module and power up the server 4 14 Appendix A Chassis Cables Appendix A Cables Screws and other Accessories A 1 Overview This appendix lists the supported cables for the SC731 chassis It o
3. After accessing the inside of the system close the system back up and secure it to the rack unit with the retention screws after ensuring that all connections have been made System Safety Electrostatic discharge ESD is generated by two objects with different electrical charges coming into contact with each other An electrical discharge is created to neutralize this difference which can damage electronic components and printed circuit boards The following measures are generally sufficient to neutralize this difference before contact is made to protect your equipment from ESD Do not use mats designed to decrease electrostatic discharge as protection from electrical shock Instead use rubber mats that have been specifically designed as electrical insulators Use a grounded wrist strap designed to prevent static discharge Keep all components and printed circuit boards PCBs in their antistatic bags until ready for use Touch a grounded metal object before removing any board from its antistatic bag Do not let components or PCBs come into contact with your clothing which may retain a charge even if you are wearing a wrist strap Handle a board by its edges only do not touch its components peripheral chips memory modules or contacts When handling chips or modules avoid touching their pins Put the serverboard and peripherals back into their antistatic bags when not in use For grounding purposes make sure your comp
4. LEDs These LEDs provide you with critical information related to different parts of the system This section explains what each LED indicates when illuminated and any corrective action you may need to take HDD Indicates IDE channel activity SAS SATA drive SCSI drive and or DVD ROM drive activity when flashing d NIC1 Indicates network activity on GLAN1 when flashing 3 2 Chapter 3 System Interface Overheat Fan Fail When Flashing This LED indicates a fan failure When Continuously On not flashing This LED indicates an overheat condi tion caused by cables obstructing the airflow in the system or the ambient room temperature being too warm Correcting an Overheat Fan Fail Condition 1 Check the routing of the cables and move any cables the restrict airflow Confirm that all fans are operating normally Verify that the heatsinks are installed properly If the chassis cover is not aligned correctly the airflow may be disrupted This leads to overheating Confirm that the chassis cover is placed correctly This LED will remain active as long as the overheat condition exists 3 3 SC731 Chassis Manual Notes 3 4 Chapter 4 Chassis Setup and Maintenance 4 1 Chapter 4 Chassis Setup and Maintenance Overview This chapter covers the steps required to install components and perform main tenance on the chassis Most components of the SC731 do not require tools or screws to set them up Tho
5. TAYA yada TE T 4 1 4 2 Removing th Chassis C VET x aaas dalal kalan d bi dani k balay ku ka k a azan 4 2 4 3 Rotating the Hard Drive Ca06 s Zl leda ll e aller iaia 4 3 4 4 Removing and Installing Hard Drives EL keke 4 4 4 5 Installing the I O Shield and Motherboard c ccceeseeeeeeeeeeeeeeeneeeeeseeeees 4 7 l O Shield 4 7 Permanent Motherboard StandOf S s a j x i 2 i 2 kan niada lak y Y dAa 4 7 Motherboard li Stall tiOk x 4 xsydna a n merda ken k en kera keye senaya na ATEREA 4 8 4 6 Installing an Optical Device cases Zindan kall wari Aine ya kun reke kaz 4 9 4 7 Installing Add on and Expansion CardS d keke 4 10 Add on Card Expansion Slot Setup ccccceccceeeeeeeeeeeeeeceeeeeseeneeeeseseaeeees 4 10 Long Add on Expansion Gard S tup sissies e sonea yae inen sanara ager Karan 4 11 4 8 installing the System F all x 5 sa sinaa aia a dakan xua kas hesi ye dand n ke ganek a w ginan kar 4 12 4 0 Installing the Front Bezel xx yk yaaa keka epa Hek AVE ewl ka KARN A He KE BEL 4 13 4510 POW rF SUPPLY senseless e r aeai r a a 4 14 Appendix A Cables Screws and other Accessories Appendix B SC731 Power Supply Specifications SC731 Chassis Manual Notes vi Chapter 1 Introduction Chapter 1 Introduction 1 1 Overview Supermicro s SC731 chassis features a unique and highly opti
6. possible repack the chassis in the original Supermicro carton using the original packaging material If these are no longer available be sure to pack the chassis securely using packaging material to surround the chassis so that it does not shift within the carton and become damaged during shipping This warranty only covers normal consumer use and does not cover damages in curred in shipping or from failure due to the alteration misuse abuse or improper maintenance of products During the warranty period contact your distributor first for any product problems 1 4 Chapter 2 System Safety Chapter 2 System Safety 2 1 Overview This chapter provides a quick setup checklist to get your chassis up and running Following the steps in the order given should enable you to have your chassis setup and operational within a minimal amount of time This quick setup assumes that you are an experienced technician famailiar with common concepts and terminology 2 2 Warnings and Precautions You should inspect the box the chassis was shipped in and note if it was damaged in any way If the chassis itself shows damage file a damage claim with carrier who delivered your system Avoid areas where heat electrical noise and eletromagnetic fields are generated Position the chassis near at least one grounded power outlet 2 3 Preparing for Setup The SC731 chassis contains many features that are unique to the SC731 chassis model Read t
7. NG REPLACING INTEGRATING INSTALLING OR RECOVERING SUCH HARDWARE SOFTWARE OR DATA Any disputes arising between manufacturer and customer shall be governed by the laws of Santa Clara County in the State of California USA The State of California County of Santa Clara shall be the exclusive venue for the resolution of any such disputes Super Micro s total liability for all claims will not exceed the price paid for the hardware product California Best Management Practices Regulations for Perchlorate Materials This Perchlorate warning applies only to products containing CR Manganese Dioxide Lithium coin cells Perchlorate Material special handling may apply See www dtsc ca gov hazardouswaste perchlorate WARNING Handling of lead solder materials used in this product may expose you to lead a chemical known to the State of California to cause birth defects and other reproductive harm Manual Revision 1 0a Release Date August 14 2009 Unless you request and receive written permission from Super Micro Computer Inc you may not copy any part of this document Information in this document is subject to change without notice Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders Copyright 2009 by Super Micro Computer Inc All rights reserved Printed in the United States of America Preface Preface About This Manual This manual is wr
8. SUPER SC731 CHASSIS SERIES HE SSE EO LEE O TERE ZERRA KERA LN UN m SC731D 300B SC731i 300B USER S MANUAL 1 0b SC731 Chassis Manual The information in this User s Manual has been carefully reviewed and is believed to be accurate The vendor assumes no responsibility for any inaccuracies that may be contained in this document makes no commitment to update or to keep current the information in this manual or to notify any person or organization of the updates Please Note For the most up to date version of this manual please see our web site at www supermicro com Super Micro Computer Inc Supermicro reserves the right to make changes to the product described in this manual at any time and without notice This product including software if any and documentation may not in whole or in part be copied photocopied reproduced translated or reduced to any medium or machine without prior written consent IN NO EVENT WILL SUPERMICRO BE LIABLE FOR DIRECT INDIRECT SPECIAL INCIDENTAL SPECULATIVE OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR INABILITY TO USE THIS PRODUCT OR DOCUMENTATION EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES IN PARTICULAR SUPERMICRO SHALL NOT HAVE LIABILITY FOR ANY HARDWARE SOFTWARE OR DATA STORED OR USED WITH THE PRODUCT INCLUDING THE COSTS OF REPAIRI
9. his manual in its entirety before beginning the installation proce dure 2 4 Electrical Safety Precautions Basic electrical safety precautions should be followed to protect yourself from harm and the SC731 from damage e Be aware of the locations of the power on off switch on the chassis as well as the room s emergency power off switch disconnection switch or electrical outlet If an electrical accident occurs you can then quickly remove power from the system e Do not work alone when working with high voltage components e Power should always be disconnected from the system when removing or in stalling main system components such as the serverboard memory modules 2 1 SC731 Chassis Manual and optical device drives When disconnecting the power you should first power down the system with the operating system and then unplug the power cords from all the power supply modules in the system When working around exposed electrical circuits another person who is fa miliar with the power off controls should be nearby to switch off the power if necessary Use only one hand when working with powered on electrical equipment This is to avoid making a complete circuit which will cause electrical shock Use extreme caution when using metal tools which can easily damage any electrical components or circuit boards they come into contact with Do not use mats designed to decrease electrostatic discharge as protection from electr
10. ical shock Instead use rubber mats that have been specifically designed as electrical insulators The power supply power cord must include a grounding plug and must be plugged into a grounded electrical outlet Serverboard battery CAUTION There is a danger of explosion if the onboard battery is installed upside down which will reverse its polarities This battery must be replaced only with the same or an equivalent type recommended by the manufacturer Dispose of used batteries according to the manufacturer s instructions DVD ROM laser CAUTION This server may have come equipped with a DVD ROM drive To prevent direct exposure to the laser beam and hazardous radiation exposure do not open the enclosure or use the unit in any uncon ventional way General Safety Precautions Keep the area around the chassis clean and free of clutter Place the chassis top cover and any system components that have been re moved away from the system or on a table so that they won t accidentally be stepped on While working on the system do not wear loose clothing such as neckties and unbuttoned shirt sleeves which can come into contact with electrical circuits or be pulled into a cooling fan Chapter 2 System Safety 2 6 Remove any jewelry or metal objects from your body which are excellent metal conductors that can create short circuits and harm you if they come into contact with printed circuit boards or areas where power is present
11. itten for professional system integrators and PC technicians It provides information for the installation and use of the SC731 chassis Installation and maintenance should be performed by experienced technicians only Supermicro s SC731 chassis features a unique and highly optimized design allow ing the user to install components with minimal or no use of screws or tools The chassis is equipped with a 300 Watt whisper quiet high efficiency power supply for superb power savings This manual lists compatible parts available when this document was published Always refer to the our Web site for updates on supported parts and configurations at www supermicro com SC731 Chassis Manual Manual Organization Chapter 1 Introduction The first chapter provides a description of the main components included with this chassis and describes the main features of the SC731 chassis This chapter also includes contact information Chapter 2 System Safety This chapter lists warnings precautions and system safety It is recommended that you thoroughly familiarize yourself with the safety precautions before installing and servicing this chassis Chapter 3 System Interface Refer to this chapter for details on the system interface which includes the functions and information provided by the control panel on the chassis as well as other LEDs located throughout the system Chapter 4 Chassis Setup and Maintenance Follow the procedures g
12. iven in this chapter when installing removing or reconfiguring your chassis Appendix A Chassis Cables Screws and other Accessories Appendix B Power Supply Specifications Preface Table of Contents Chapter 1 Introduction 1 1 an Mdckrrrr M mmDDnmnm mxmnmmmmmxmxxxXxxwnEmmmmmmnmmmmmd 1 1 1 2 Where to get Replacement Components 1 1 3 Shipping D S S a fenna a ia E KURE NWE R S kan 1 1 1 4 Returning Merchandise for Service E EEE keke k AS 1 2 1 5 gt Contacting SUPENMICIO ss a Ay kla klan d ra AA a lele ak dk b be ae 1 3 Chapter 2 System Safety 2 1 OVENI SN YD ND DD DD rr rrr rn DD 2 1 252 Waiminds andPr GatlOl S alan yan iyaank k s na i al h n aka aya lt a v ke Dav na ky nn nA R k 2 1 2 3 Preparing for Setup 22 1 24 Electrical Safety Pr catllollS e 24 3121 layan aki bl n ee endai 2 1 2 5 General Safety Precautions csicesasseeversznceseescenezacneceacenceseetvesceruenateaneaepesesanzen sae 2 2 2 6 System Sal ya irrino Evita EiT CEASE causes ha kany da k naya ana W nan y r Wy 2 3 Chapter 3 System Interface 3 1 OVO pw ca W a ci AM N Ae Mey e REN ME KE Pe KN a a Ne 3 1 3 2 Control Panel BUliGS i A l ye ka yall cassis al n ay n M dek Ha ey aa ran 3 2 3 3 Control Panel LEDs Chapter 4 Chassis Setup and Maintenance 4 1 QUE V W i says sal nls n k k coisa y sel kar ake bn BER AVE ke Wla
13. ket rail A onto one side of the optical device by inserting the pins of the bracket into the mounting holes on the sides of the optical device 4 Slide the optical device into the chassis Optional Screw B Bracket Figure 4 8 Installing the Optical Device 4 9 SC731 Chassis Manual 4 7 Installing Add on and Expansion Cards Release Latch A Add on Expansion Card Slots Protective Bracket B Figure 4 9 Locating the Add on Card Installation Components Add on Card Expansion Slot Setup The SC731 chassis includes slots for add on cards and expansion cards The number of cards you can use depends on your chassis model and motherboard model Installing Add on and Expansion Cards 1 Depress the release latch A which holds the protective bracket B which secures the add on card brackets to the chassis 2 Lower the protective bracket from over the top of the add on card dummy brackets as shown in the lower illustration 3 Remove the add on card dummy brackets from their slots 4 Simultaneously slide the add on card and its bracket into the slot on the chassis and insert the add on card into its slot on the motherboard 5 If desired screws can be used to secure the add on cards into the chassis 6 Close the protective bracket over the tops of the add on card brackets 4 10 Chapter 4 Chassis Setup and Maintenance Long Card Holders A Figure 4 10 Ins
14. ll and configure the chassis components Rotating the Hard Drive Cage 1 Disconnect the chassis from any power source 2 Lift the release tab A 3 Rotate the hard disk drive cage B outward 4 3 SC731 Chassis Manual 4 4 Removing and Installing Hard Drives Release Tabs Figure 4 3 Removing the Hard Drive Carrier from the Hard Drive Cage The SC731 chassis must be powered down before hard drives can be removed from the hard drive carriers Removing and Installing Hard Drives A Disconnect the chassis from any power source Rotate the hard drive cage outward 90 degrees as described in section 4 3 Rotating the Hard Drive Cage Disconnect all of the cables from the hard drive Press the release tab on the side of the hard drive carrier that is to be re moved from the hard drive cage Gently slide the hard drive carrier out of the hard drive cage 4 4 Chapter 4 Chassis Setup and Maintenance Figure 4 4 Removing the Hard Drive from the Hard Drive Carrier 6 Ifa hard drive is already present remove it by carefully pulling the sides of the hard drive carrier outward 7 Remove the hard drive from the hard drive carrier 4 5 SC731 Chassis Manual Optional Screws Figure 4 5 Installing the Hard Drive Carrier into the Hard Drive Cage 8 Insert the
15. mized design allow ing most configuration of the chassis to be accomplished without tools or screws The chassis is equipped with high efficiency power supply High performance fans provide ample optimized cooling for FB DIMM memory modules and four hot swap drive bays offer maximum storage capacity 1 2 Where to get Replacement Components Although not frequently you may need replacement parts for your system To ensure the highest level of professional service and technical support we strongly recommend purchasing exclusively from our Supermicro Authorized Distributors System Integrators Resellers A list of Supermicro Authorized Distributors System Integrators Reseller can be found at http www supermicro com Click the Where to Buy link 1 3 Shipping Lists Please visit the following link for the latest shiping lists and part numbers for your particular chassis model http www supermicro com products chassis tower chs 731 C731D 300B Chassis Model CPU HDD 1O Slots Power Supply 4x 3 5 300W 2x 5 25 4x FF High ise OE 1x 3 5 for efficiency card reader 1 1 SC731 Chassis Manual SC731i 300B Chassis Model SC731i 300B CPU HDD 1 0 Slots 4x 3 5 UP 2x 9 25 4x FF 1 2 Power Supply 300W High efficiency Chapter 1 Introduction 1 4 Contacting Supermicro Headquarters Address Tel Fax Email Web Site Europe Address Tel Fax Email
16. new hard drive into the hard drive carrier 9 Insert the hard drive carrier into the hard drive cage sliding it towards the back of the the hard drive cage until it clicks into a locked position 10 If desired each hard drive carrier may be secured to the exterior of the hard drive cage using optional screws 11 Rotate the hard drive cage 90 degrees inward returning it to the closed operational position in the chassis 12 Connect the related cables to the hard drives 4 6 Chapter 4 Chassis Setup and Maintenance 4 5 Installing the I O Shield and Motherboard 1 0 Shield Figure 4 6 I O Shield Placement V O Shield An I O shield holds the motherboard ports in place Install the I O shield before you install the motherboard The SC731 supports a Micro ATX motherboard which is sold separately from the SC731 chassis and comes with an I O shield specific to the Micro ATX motherboard Installing the I O Shield 1 Review the documentation that came with the Micro ATX motherboard Be come familiar with component placement requirements and safety precau tions 2 Disconnect the chassis from any power source 3 With the illustrations facing the outside of the chassis slide the shield into the space provided 4 Once installed the motherboard will hold the I O shield in place Permanent Motherboard Standoffs The SC731 provides permanent motherboard standoffs molded into the chas sis floor These standoffs pre
17. nly includes the most commonly used components and configurations For more compatible cables refer to the manufacturer of the motherboard and our Web site at www supermicro com A 2 Cables Included with SC731 Chassis C731D 300B SC731i 300B Part Type Quantity Description CBL 0087 Cable 1 Front panel cable 16 pin to 16 pin CBL 0263L Cable 1 USB cable SC731i only CBL 0084L Cable 1 Split converter cable A 1 SC731 Chassis Manual A 3 Chassis Screws The accessory box includes all the screws needed to set up your chassis This section lists and describes the most commonly used screws Your chassis may not require all of the parts listed M B HARD DRIVE 2 Pan head Flat head 6 32 x 5 mm 6 32 x 5 mm 0 197 0 197 DVD ROM CD ROM and FLOPPY DRIVE g g Pan head Flat head Round head Round head 6 32 x5 mm 6 32 x 5 mm M3 x5 mm M2 6 x 5 mm 0 197 0 197 0 197 0 197 M B STANDOFFS M B standoff 6 32 to 6 32 A 2 Appendix B Power Supply Specifications Appendix B SC731 Power Supply Specifications This appendix lists power supply specifications for your chassis system The SC731 chassis includes a power supply rated at 80 Plus Bronze Level BRONZE Bronze Level 80 PLUS Certified Power Supplies C731D 300B SC731i 300B 300W MFR Part PWS 303 PQ Input 100 127 200 240Vac A 4A 50 60Hz 5 08V 19 Amps 12V 11 Amps 12Vcpu 11 5 Amps 3 3V 16 Am
18. ps 12V 0 15 Amps 5 08Vaux 2 Amps B 1 SC731 Chassis Manual Disclaimer cont The products sold by Supermicro are not intended for and will not be used in life sup port systems medical equipment nuclear facilities or systems aircraft aircraft devices aircraft emergency communication devices or other critical systems whose failure to per form be reasonably expected to result in significant injury or loss of life or catastrophic property damage Accordingly Supermicro disclaims any and all liability and should buyer use or sell such products for use in such ultra hazardous applications it does so entirely at its own risk Furthermore buyer agrees to fully indemnify defend and hold Supermicro harmless for and against any and all claims demands actions litigation and proceedings of any kind arising out of or related to such ultra hazardous use or sale B 2
19. se components which must be secured with screws require only a Phillips screwdriver Print this chapter to use as a reference while setting up your chassis Review the warnings and precautions listed in the manual be fore setting up or servicing this chassis These include infor mation in Chapter 2 System Safety and the warning precau tions listed in the setup instructions 4 1 SC731 Chassis Manual 4 2 Removing the Chassis Cover Cover Handle B Slide Tab A Toward Handle B Release Tab A Figure 4 1 Removing the Chassis Cover Removing the Chassis Cover 1 Push the power button to turn off the power to the system Disconnect the chassis from any power source Slide the release tab A towards the cover handle B Grasp the cover handle with your fingers Slide the cover toward the rear of the chassis Remove the cover from the chassis Warning Except for short periods of time do NOT operate the system without the cover in place The chassis cover must be in place to allow for proper airflow and to prevent overheating 4 2 Chapter 4 Chassis Setup and Maintenance 4 3 Rotating the Hard Drive Cage Release Tab A HDD Cage B Figure 4 2 Rotating the Hard Drive Cage In order to access and install components in the chassis interior it is necessary to rotate the hard drive cage This will provide sufficient room to insta
20. talling a Long Add on Expansion Card Long Add on Expansion Card Setup The SC731 chassis includes clips to accomodate the use of long length add on cards These clips support and stabilize the long cards preventing them from con tacting any undesired surfaces Installing Long Add on Expansion Cards 1 Locate the long card holders A on the opposite side of the chassis from the add on card brackets 2 Begin by installing the long card as described in the previous section Add on Expansion Card Slot Setup 3 Push the long card holder all the way down onto the end of the card to se cure it in the chassis 4 11 SC731 Chassis Manual 4 8 Installing the System Fan Figure 4 11 Installing the System Fan The SC731 includes a super quiet system fan that provides cooling for the chassis No tools or screws are required to install the system fan Installing the System Fan 1 Disconnect all power to the chassis 2 Insert the four rubber pins into the four mounting holes surrounding the fan grill on the rear of the chassis 3 Place the system fan on top of the fan grill aligning the mounting holes of the fan grill with the mounting holes of the system fan 4 Pull the rubber pins through the mounting holes of the system fan to secure the fan to the chassis 5 Connect the fan cable to the motherboard 4 12 Chapter 4 Chassis Setup and Maintenance 4 9 Installing the Front Bezel Front Bezel Installation
21. uter chassis provides excellent conductivity between the power supply the case the mounting fasteners and the serverboard 2 3 SC731 Chassis Manual Notes 2 4 Chapter 3 System Interface Chapter 3 System Interface 3 1 Overview There are several LEDs on the control panel as well as others on the drive carriers to keep you constantly informed of the overall status of the system as well as the activity and health of specific components The SC731 has a power on off switch located on the control panel This chapter explains the meanings of all LED indica tors and the appropriate responses you may need to take ower ot Button 999 All in One 5 Ez OH LED ower Card Button Reader u HDD LED karn EREN SC731D 300B SC731i 300B Figure 3 1 Front Chassis Panels 3 1 SC731 Chassis Manual 3 2 Control Panel Buttons Power The main power button is used to apply or remove power from the power supply to the system When the power is on the power button will be lighted by a blue LED Turning off the system power with this button will cause the blue LED to turn off and will remove the main power but will keep standby power supplied to the system Therefore you must unplug system before servicing the system 3 3 Control Panel LEDs The control panel located on the front of the SC731 chassis has three
22. vent short circuits by creating space between the motherboard and the chassis surface Note that motherboards must be purchased separately from the chassis 4 7 SC731 Chassis Manual Motherboard Installation Installing the Motherboard 1 Review the documentation that came with your motherboard Become familiar with component placement requirements precautions and cable connec tions Disconnect the chassis from any power source Rotate the hard drive cage 90 degrees outward as described in the previous section Rotating the Hard Drive Cage Lay the motherboard in the chassis Secure the motherboard to the chassis using the rounded Phillips head screws provided Do not exceed eight pounds of torque when tightening down the motherboard Secure the CPU s heatsinks and other components to the motherboard as described in the motherboard documentation Connect the cables between the motherboard and power supply Figure 4 7 Installing the Motherboard 4 8 Chapter 4 Chassis Setup and Maintenance 4 6 Installing an Optical Device The SC731 chassis has two optical device slots which support up to two optional devices such as DVD ROM drives Installing an Optical Device 1 Remove the front bezel from the chassis by lifting it upwards from the bottom and pulling off the front of the chassis 2 Remove the cover plate from the optical device slot on the front of the chas sis 3 Install the brac
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