Dell XPS 720 Owner's Manual page 149

DC Power Connector P6 and P7 (BAY1 and Bay2)
Pin Number Signal name
1 +12 VE DC
2 COM
3 COM
4 +5 VDC
DC Power Connectors P8 and P9 (HDD0 and HDD1)
5
Pin Number Signal name
1 +3.3 VDC
2 COM
3 +5 VDC
4 COM
5 +12 VE DC
1 2 3 4
1-KW Power Supply
18-AWG Wire Color
Blue/Yellow
Black
Black
Red
4 3 2 1
1-KW Power Supply
18-AWG Wire Color
Orange
Black
Red
Black
Blue/Yellow
750-KW Power Supply
Signal name 18-AWG Wire Color
+12 VB DC White
COM Black
COM Black
+5 VDC Red
750-KW Power Supply
Signal name 18-AWG Wire Color
+3.3 VDC Orange
COM Black
+5 VDC Red
COM Black
+12 VB DC White
Removing and Installing Parts
149