Dell Precision T5400 (Late 2007) - Manual (Page 232)

232 Adding and Replacing Parts
13 Connect the data cable to the back of the drive and to the connector on
the system board.
14 Ensure that all connectors are properly cabled and firmly seated.
15 Reinstall the drive panel (see "Replacing the Drive Panel" on page 237).
16 Replace the computer cover (see "Replacing the Computer Cover" on
page 161).
1 power cable 2 SATA data cable
3 SATA connector on system
board
4 optional third SATA hard drive in hard-drive
carrier
1
2
3
4