HP Xw4550 - Workstation - 2 GB RAM Technical Reference Manual page 147

4-Pin power (processor/memory/aux. sys. board) cable
connector (mates with system board connector P3)
CAUTION: The 4-pin power cable connector is the color white.
You must mate it ONLY with white system board connector P3.
Mating this cable with any other system board connector and
applying power might damage your system board and void your
warranty.
Auxiliary 6-pin power cable connector for optional PCI
Express graphics card
4 6
1
3
NOTE: This connector and optional cable connect between an installed PCI Express graphics card auxiliary
power connector and the system board "Graphic Pwr" connector P4 for graphics cards that use more than 75
watts of power.
AUX_IN (auxiliary audio)
ENWW
Pin Color Signal
1 BLK GND
2 BLK GND
3 BRN +12VCPU
4 BRN +12VCPU
Pin Color
1 YEL
2 YEL
3 YEL
4 BLK
5 BLK
6 BLK
Pin Signal
1 AUX_LEFT
2 AGND
3 AGND
4 AUX_RIGHT
Connector pin descriptions 139
Signal
+12VCPU
+12VCPU
+12VCPU
GND
GND
GND