Dell 400 Owner's Manual page 83

release tab
*"piano" bracket
4 If your computer includes a card retention mechanism:
Pivot the mechanism upward and gently squeeze in on the sides to release the
a
mechanism from the two tab slots holding it in place.
Set the retention mechanism aside in a secure location.
b
NOTE:
For full-length PCI-E cards, if a "piano" bracket is present on your computer you need to rotate it
upward by pressing the tabs on the side of the bracket toward each other.
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.
NOTE:
For full-length PCI-E cards, if a "piano" bracket is present on your computer you need to rotate it
upward by pressing the tabs on the side of the bracket toward each other.
card retention mechanism*
*may not be present on all computers
card retention
door
Removing and Installing Parts
83