Dell OptiPlex 960 (Late 2008) - Manual (Page 46)

11. Replace the optical drive (see Optical Drive ).
12. Connect the AC power cable to the connector.
13. Perform the procedure After Working on Your Computer .
DC Power Connectors
DC Power Connector P1
Pin Number Signal name 18-AWG Wire
1 +3.3 VDC Orange
2 +3.3 VDC Orange
3 GND Black
4 +5 VDC Red
5 GND Black
6 +5 VDC Red
7 GND Black
8 PS_PWRGOOD* Gray
9 P5AUX Purple
10 +12 VDC White
11 +12 VDC White
12 +3.3 VDC Orange
13 +3.3 VDC/SE Orange
14 +12 VDC* Blue
15 GND Black
16 PWR_PS_ON* Green
17 GND Black
18 GND Black
19 GND Black
20 NC NC
21 +5 VDC Red
22 +5 VDC Red