1. Part Number A48G Next Generation AMD Opteron Up To 2 6GHz Socket AM2 Active Cooler For 1U Server ROHS Compliant Overall Specification Dimension 106 0mm x 79 0mm x 27 5mm Weight 500 5g Material Skived Copper Heatsink Aluminum Blower with 180 Degree Exhaust Thermal Resistance 0 25 to 0 45 C W Depends on System Fan Specification Dimension 70 x 70 x 15mm Rated Speed 7000 10 RPM Bearing 2 x Ball Rated Voltage DC12V Maximum Airflow 12 83 CFM Acoustical Noise 54 4 dBA Lead Wire Pin Out Pin 1 Black Pin 2 Red Pin 3 White Tachometer Signal Output