Dell Precision NT499 User Manual page 170

4 Press the release tab on the card retention cover and pivot the cover open.
NOTE:
1 release tab
3 card retention door
5 Remove the filler bracket to create a card-slot opening, if necessary.
6 Prepare the card for installation.
See the documentation that came with the card for information on
configuring the card, making internal connections, or otherwise
customizing it for your computer.
CAUTION:
are connected to a network. To guard against electrical shock, be sure to unplug
your computer from its electrical outlet before installing any cards.
NOTE:
The standard length for a PCI card in the last PCI slot (Slot6) is 5.5 in;
however, you can install a 3/4-length PCI card (up to 10.5 in) by removing the second
hard drive bay bracket.
170
Adding and Replacing Parts
You can remove the card retention cover, if desired, and set it aside.
1
Some network adapters automatically start the computer when they
2
2 card retention cover
3