HP Xw6400 - Workstation - 4 GB RAM Reference Manual page 155

8-Pin power (for CPUs and memory)
5
1
CAUTION:
x16 graphics card and which power cable connects to the system board. These two cables have different
pin counts and different colors. The PCI Express power cable has a 6-pin black connector, and the
system board power cable has an 8-pin 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, see
NOTE: The 6-pin power (auxiliary PCI Express) is only required with high-powered graphics cards.
6-Pin power (auxiliary PCI Express)
4 6
1
3
Keyboard connector
ENWW
8
4
Be sure you can differentiate between which power cable connects to the PCI Express
PCI installation on page
Pin Color
1 BLK
2 BLK
3 BLK
4 BLK
5 WHT
WHT
6 WHT
7 WHT
with
stripe
8 WHT
with
stripe
79"PCI or PCI Express Installation."
Pin
1
2
3
4
5
6
Pin
1 2 3
4 5 6
Signal
GND
GND
GND
GND
+12VCPU0
+12VCPU0 RSENSE
+12VCPU0
+12VCPU1
+12VCPU1
Color Signal
YEL +12V-C
YEL +12V-C
YEL +12V-C
BLK GND
BLK GND
BLK GND
Signal
Data
Unused
Ground
+5 VDC
Clock
Unused
Connector pin descriptions 145