Dell Precision T5400 (Late 2007) - Manual (Page 203)

Adding and Replacing Parts 203
b If the card is full-length, press the release tab on the end of the
alignment guides on the fan case.
c If the connector has a release tab, press the release tab as you grasp the
card by its top corners, and ease it out of its connector.
6 If you are removing the card permanently, install a filler bracket in the
empty card-slot opening.
NOTE: Installing filler brackets over empty card-slot openings is necessary to
maintain FCC certification of the computer. The brackets also keep dust and dirt out
of your computer.
7 Before you close the card retention door, ensure that:
• The tops of all cards and filler brackets are flush with the alignment
bar.
• The notch in the top of each card or filler bracket fits around the
alignment guide.
NOTE: For extra security, remove the alignment guide (an upside-down
screw) and screw it in right side up to secure a card.