Dell Precision T3400 (Late 2007) - Manual (Page 151)

Adding and Replacing Parts
151
DC Power Connector P2
DC Power Connectors P3 and P5
22 +5 VDC Red 18 AWG
23 +5 VDC Red 18 AWG
24 COM Black 18 AWG
Pin Number Signal Name 18-AWG Wire
1 COM Black
2 COM Black
3 +12 VADC Yellow
4 +12 VADC Yellow
Pin Number Signal name 18-AWG Wire
1 +3.3 VDC Orange
2 COM Black
3 +5 VDC Red
4 COM Black
5 +12 VADC Yellow
Pin Number Signal name Wire Color Wire Size
3
1 4
2