Dell XPS 410 (Mid 2007) - Manual (Page 93)

Removing and Installing Parts
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5 If you are installing a new card, remove the filler bracket to create a card-slot opening. Then continue
with step 7.
6 If you are replacing a card that is already installed in the computer, remove the existing card.
If necessary, disconnect any cables connected to the card. If your card includes a retention mechanism,
remove the top of the retention mechanism by pressing the tab and pulling up on the top.
1 release tab 2 card retention mechanism 3 card retention door
3
1 2