HP Z400

Display port
4 ML_Lane 1(p) 14 GND
5GND 15AUX CH(p)
6 ML_Lane 1(n) 16 GND
7 ML_Lane 2(p) 17 AUX CH(n)
8 GND 18 Hot Plug Detect
9 ML_Lane 2(n) 19 DP_PWR Return
10 ML_Lane 3(p) 20 DP_PWR
Main power cable, P1
Pin Signal Pin Signal Pin Signal
1 +3.3V 9 +5 Vaux 17 GND
2 +3.3V 10 +12 V-B 18 GND
3 GND 11 +12 V-B 19 GND
4 +5V 12 12 V-D 20 GND
5 GND 13 +3.3V 21 +5V
6 +5V 14 –12V 22 +5V
7 GND 15 GND 23 12 V-D
8 POK 16 PS_ON_L 24 GND
226 Appendix A Connector pins ENWW