HP Z400 Maintenance And Service Manual page 239

CPU power cable, P3
CAUTION:
connects to the PCIe x16 graphics card and which power cable connects to the
system board. These two cables have different pin counts and different colors.
The PCIe power cable has a 6-pin black connector, and the CPU power cable
has an 4-pin white connector. When power is present, you must never connect
the PCIe power cable to the system board. If you do so, the system board can be
damaged and the warranty voided. To see a picture of the PCIe cable and where
it must be connected, see
NOTE: The 6-pin power (auxiliary PCIe) is only required with high-powered
graphics cards.
Graphics aux. power cables
ENWW
Ensure that you can differentiate between which power cable
Expansion card on page
P12
P14
Pin Color Signal
1 BLK GND
2 BLK GND
3 WHT 12V CPU
4 WHT 12V CPU
124.
475W power supply
Pin Signal
1 V12-D
2 V12-D
3 V12-D
4 GND
5 GND
6 GND
Pin
1
2
3
4
5
6
600W power supply
Color Signal
YEL V12–CPU1
YEL V12–CPU1
YEL V12–CPU1
BLK GND
BLK GND
BLK GND
Signal
V12–M
V12–M
V12–M
GND
GND
GND
Color
BLK w/ LT BLU
STRIPE
BLK w/ LT BLU
STRIPE
BLK w/ LT BLU
STRIPE
BLK
BLK
BLK
Color
BLK w/ BRN
STRIPE
BLK w/ BRN
STRIPE
BLK w/ BRN
STRIPE
BLK
BLK
BLK
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