Dell XPS/Dimension XPS Gen 4 - Manual (Page 52)

DC Power Connector P2
DC Power Connector P5
DC Power Connector FD5
DC Power Connectors HDD1, HDD2, HDD3, and BAY 3
Pin Number Signal Name 18-AWG Wire Color
1 COM Black
2 COM Black
3 +12 VA DC Yellow
4 +12 VA DC Yellow
Pin Number Signal Name 18-AWG Wire Color
1 +12 VB DC White
2 +12 VB DC White
3 +12 VB DC White
4 COM Black
5 COM Black
6 COM Black
NOTE: The P5 connector is intended for use with the PCI Express graphics cards whose power requirements exceed 75 watts.
Pin Number Signal Name 18-AWG Wire Color
1 +5 VDC Red
2 COM Black
3 COM Black
4 +12 VB DC White
Pin Number Signal Name 18-AWG Wire Color