HP Xw8400 HP xw8400 Service and Technical Reference Guide - Page 174
Caution
UPC - 883585271085
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CAUTION Be sure you can differentiate between which power cable connects to the PCI Express x16 graphics card and which power cable connects to the system board. These two cables look very similar. The PCI Express power cable has a black connector, and the system board power cable has a white connector. When power is present, you must never connect the PCI Express power cable to the system board. If you do so, the system board may be damaged and your warranty voided. To see a picture of the PCI Express cable and where it must be connected, refer to PCI or PCI Express installation on page 75. 6-Pin power (auxiliary system board) connector 46 13 Pin Color 1 BLD w/ORG stripe 2 BLK w/ORG stripe 3 BLD w/YEL stripe 4 BLK Signal +3.3V +3.3V +12V-A GND 5 BLK 6 BLD w/YEL stripe GND -12V 8-Pin power (for CPUs and memory) 5 8 1 4 Pin Color Signal 1 BLK GND 2 BLK GND 3 BLK GND 4 BLK GND 5 Gray +12 V CPU0 Rsense BLK w/WHT stripe +12 V CPU0 6 BLK w/WHT stripe +12VCPU0 7 BLK w/light blue +12VCPU1 stripe 8 BLK w/light blue +12VCPU1 stripe CAUTION Be sure you can differentiate between which power cable connects to the PCI Express x16 graphics card and which power cable connects to the system board. These two cables look very similar. The PCI Express power cable has a black connector, and the system board power cable has a white connector. When power is present, you must never connect the PCI Express power cable to the system board. If you do so, the system board may be damaged and your warranty voided. To see a picture of the PCI Express cable and where it must be connected, refer to PCI or PCI Express installation on page 75. NOTE The 6-pin power (auxiliary PCI Express) is only required with high-powered graphics cards. 164 Appendix D Appendix D - Connector pins ENWW