Dell OptiPlex 170L User Manual page 63

DC Power Connector P2
Pin Number Signal Name 18-AWG Wire
1 +3.3 VDC
2 COM
3 +5 VDC
4 COM
5 +12 VDC
DC Power Connectors P3 and P4
Pin Number Signal Name 18-AWG Wire
1
2
3
4
DC Power Connector P5
Pin Number Signal Name 22-AWG Wire
1
2
3
4
DC Power Connector P6
Pin Number Signal Name 18-AWG Wire
1 COM
2 COM
3 +12 VDC
4 +12 VDC
DC Power Connector P7
NOTE: Your computer's power supply may or may not have the "P7" connector.
Pin Number Signal Name 18-AWG Wire
1
2 COM
3 COM
4 +3.3 VDC
5 +5 VDC
6 +12 VDC
Mini-Tower Power Supply DC Connector Pin Assignments
Orange
Black
Red
Black
Yellow
+12 VDC Yellow
COM Black
COM Black
+5 VDC Red
+5 VDC Red
COM Black
COM Black
+12 VDC Yellow
Black
Black
Yellow
Yellow
N/C
Black
Black
Orange
Red
Yellow