Dell Dimension 4550 - Manual (Page 91)

Adding Parts 91
7 If you are removing the card permanently, install a filler bracket in the
empty card-slot opening.
If you need a filler bracket, contact Dell.
NOTICE: 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.
8 Lower the retention arm and press it into place, securing the card(s) in
the computer.
NOTICE: To connect a network cable, first plug the cable into the network
wall jack and then plug it into the computer.
9 Close the computer cover, reconnect the computer and devices to
electrical outlets, and turn them on.
10 Remove the card’s driver from the operating system.
card
card bracket
slot connector
system board
filler bracket in empty
card-slot opening