Dell Precision T5400 (Late 2007) - Manual (Page 224)

224 Adding and Replacing Parts
NOTICE: If metal shields are present in your computer configuration, they must be
installed at all times while your computer is in use or your computer may not
function properly.
12 If metal shields are present in your computer, install the vented metal
insert over the FlexBay and the empty space beneath it (see "About the
Metal Shields Present in Some Drive Configurations" on page 207 for
more information):
1 sliding-plate lever 2 SATA data cable
3 power cable 4 power supply
5 SATA connector on system
board
6 optional SATA hard drive in FlexBay
2
3
4
5
6
1