Dell OptiPlex 755 User Manual page 128

10. Reconnect the DC power cables to the power supply.
11. Connect the AC power cable to the AC power connector.
12. Replace the computer cover (see
DC Power Connectors
DC Power Connector P1
Pin Number Signal name
1 +3.3 VDC
2 +3.3 VDC
3 GND
4 +5 VDC
5 GND
6 +5 VDC
7 GND
8 PS_PWRGOOD
9 P5AUX
10 V_12P0_DIG
11 V_12P0_DIG
12 +3.3 VDC
13 +3.3VDC/SE*
14 -12 VDC
15 GND
16 PWR_PS_ON
17 GND
18 GND
Replacing the Computer Cover).
18-AWG Wire
Orange
Orange
Black
Red
Black
Red
Black
Gray
Purple
White
White
Orange
Orange
Blue
Black
Green
Black
Black