Dell Precision T5400 (Late 2007) - Manual (Page 242)

242 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.
7 If you are not installing another drive in the FlexBay and metal shields are
present in your computer (see "About the Metal Shields Present in Some
Drive Configurations" on page 207), install the vented metal insert over
the FlexBay and the empty space beneath it:
a Insert the metal insert’s two upper screws and its two lower screws into
the corresponding slots inside the FlexBay.
b Push the vented metal insert until it clicks into place and its metal
tabs rest flush against the chassis surface.
Install a drive-panel insert (see "Replacing a Drive-Panel Insert" on
page 236).
8 If you are installing another drive in the FlexBay, see the appropriate
installation procedure in this section.
1 sliding-plate lever 2 floppy drive
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2