Dell OptiPlex 755 - DC Power Connector P2; DC Power Connectors P3

Power Supply 223
DC Power Connector P2
DC Power Connectors P3
23 VCC (+5V) Red
24 GND Black
*Use 22-AWG wire instead of 18-AWG wire.
Pin
Number
Signal
Name
18-AWG
Wire
1GNDBlack
2GNDBlack
3+12 VDCYellow
4+12 VDCYellow
Pin
Number
Signal
Name
18-AWG
Wire
1 +3.3 VDC Orange
2GNDBlack
3+5 VDCRed
4GNDBlack
5 +12 VDC Yellow
Pin
Number
Signal Name 18-
AWG
Wire
3
1
4
2