Dell Vostro 400 (Mid 2007) - Manual (Page 111)

Removing and Installing Parts
111
DC Power Connector P7
DC Power Connector P8
Pin Signal Color AWG Wire
1 +5 VDC Red 22
2 GND Black 22
3 GND Black 22
4 +12 VADC Yellow 22
Pin Signal Color AWG Wire
1 +12 VADC Yellow 22
2 +12 VADC Yellow 22
3 +12 VADC Yellow 22
4 GND Black 22
5 GND Black 22
6 GND Black 22
1 3 2
4 5 6