Dell OptiPlex GX280 - Manual (Page 107)

15 Black
16 Black
17 Black
18 N/C
19 Red
20 Red
*Sense connector.
DC Power Connector P2
Pin Number Signal Name 18-AWG Wire
1
+3.3 VDC Orange
2 COM Black
3 +5 VDC Red
4 COM Black
5 +12 VDC Yellow
DC Power Connectors P3 and P4
Pin Number Signal Name 18-AWG Wire
1
+12 VDC Yellow
2 COM Black
3 COM Black
4 +5 VDC Red
DC Power Connector P5
Pin Number Signal Name 22-AWG Wire
1
+5 VDC Red
2 COM Black
3 COM Black
4 +12 VDC Yellow
DC Power Connector P6
Pin Number Signal Name 18-AWG Wire
1
COM Black
2 COM Black
3 +12 VDC Yellow
4 +12 VDC Yellow