Dell Precision T5400 (Late 2007) - Manual (Page 266)

266 Adding and Replacing Parts
8 If no screws are attached to the reader, remove the shoulder screws from
the inside of the drive panel and attach them to the new Media Card
Reader.
9 Gently slide the reader into place until you hear a click or feel the drive
securely installed.
10 Attach the interface cable to the Media Card Reader.
11 Connect the other end of the interface cable to the system board
connector labeled "USB." To locate the system board connector, see
"System Board Components" on page 28.
1 drive 2 screws
1
2