Dell Precision T5400 (Late 2007) - Manual (Page 279)

Adding and Replacing Parts 279
10 Gently slide the drive into place until you hear a click or feel the drive
securely installed.
NOTICE: Do not attach a SATA optical drive to an HDD connector on the system
board or it will not function. Attach SATA optical drives to the connectors labeled
SATA on the system board.
11 Attach the power and data cables to the optical drive.
If you are installing a SATA drive, connect the other end of the data cable
to a SATA connector on the system board.
1 optical drive 2 screws
1
2