HP Xw8400 HP xw8400 Workstation - Service and Technical Reference Guide - Page 165
The 6-pin power auxiliary PCI Express is only required with high-powered graphics cards.
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4-Pin power (memory system board) connector Pin Color 1 BLK 2 BLK 3 BLK w/YEL stripe 4 BLK w/YEL stripe Signal GND GND +12V-M +12V-M 8-Pin power (for CPUs) 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 NOTE: The 6-pin power (auxiliary PCI Express) is only required with high-powered graphics cards. 6-Pin power (auxiliary PCI Express) 46 13 Pin Color Signal 1 BLK w/YEL stripe +12V-G 2 BLK w/YEL stripe +12V-G 3 BLK w/YEL stripe +12V-G 4 BLK GND 5 BLK GND 6 BLK GND ENWW Connector pin descriptions 155
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4-Pin power (memory system board) connector
Pin
Color
Signal
1
BLK
GND
2
BLK
GND
3
BLK w/YEL stripe
+12V-M
4
BLK w/YEL stripe
+12V-M
8-Pin power (for CPUs)
Pin
Color
Signal
5
8
4
1
1
BLK
GND
2
BLK
GND
3
BLK
GND
4
BLK
GND
5
Gray
BLK w/WHT stripe
+12 V CPU0 Rsense
+12 V CPU0
6
BLK w/WHT stripe
+12VCPU0
7
BLK w/light blue
stripe
+12VCPU1
8
BLK w/light blue
stripe
+12VCPU1
NOTE:
The 6-pin power (auxiliary PCI Express) is only required with high-powered graphics cards.
6-Pin power (auxiliary PCI Express)
Pin
Color
Signal
4
6
3
1
1
BLK w/YEL stripe
+12V-G
2
BLK w/YEL stripe
+12V-G
3
BLK w/YEL stripe
+12V-G
4
BLK
GND
5
BLK
GND
6
BLK
GND
ENWW
Connector pin descriptions
155