Dell Precision T5400 (Late 2007) - Manual (Page 173)

Adding and Replacing Parts 173
DC Power Connector Bay 1 (PATA)
DC Power Connectors Bays 1, 2, and 3 (SATA)
Pin Number Signal name 18-AWG Wire
1 5 V Red
2 COM Black
3 COM Black
4 12 VC Blue/White
Pin Number Signal name 18-AWG Wire
1 12 VC Blue/White
2 COM Black
3 COM Black
4 5 V Red
Pin Number Signal name 18-AWG Wire
1 3.3 V Orange
2 COM Black
3 5V Red
4 COM Black
5 12 VC Blue/White
5 4 3 2 1