HP xw4600 Service And Technical Reference Manual page 167

24-pin main power cable connector
13
1
1 +3.3V
2 +3.3V
3 GND
4 +5V
5 GND
6 +5V
4-pin power (CPU/memory/aux. sys.
board) cable connector
6-pin power (auxiliary PCI Express)
cable connector
4 6
1
3
CAUTION: Ensure that 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 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 4-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 can be damaged and your warranty voided. To see a picture
of the PCI Express cable and where it must be connected, see
cards on page
ENWW
7 GND 13
8 POK 14
9 +5 Vaux 15
10 +12 V-B 16
11 +12 V-B 17
12 Unused 18
81.
24
12
+3.3V 19 GND
-12V 20 GND
GND 21 +5V
PS_ON_L 22 +5V
GND 23 Unused
GND 24 GND
Pin Color Signal
1 BLK GND
2 BLK GND
3 WHT +12 VCPU
4 WHT +12 VCPU
Pin Color Signal
1 YEL +12 V-D
2 YEL +12 V-D
3 YEL +12 V-D
4 BLK GND
5 BLK GND
6 BLK GND
PCI Express
Connector pin descriptions 159