Dell XPS 8300 (Late 2010) - Manual (Page 41)

PCI Express Cards 41
7 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.
Replacing PCI Express Cards
1 Follow the instructions in "Before You Begin" on page 13.
2 Prepare the card for installation.
See the documentation that shipped with the card for information on
configuring the card, making internal connections, or otherwise
customizing it for your computer.
3 Place the PCI Express card in the slot on the system board and press down
firmly. Ensure that the PCI Express card is fully seated in the slot.
4 Replace the card retention bracket (see "Replacing the Card Retention
Bracket" on page 38).
1 PCI Express x1 card 2 PCI Express x1 card slot
3 PCI Express x16 card slot 4 PCI Express x16 card
4
3
2
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