Dell Dimension C521 - Manual (Page 73)

Removing and Installing Parts
73
12 If you installed an add-in network adapter and want to disable the integrated network adapter:
a Enter system setup, select Integrated NIC from the Onboard Devices group, and change the
setting to Off (see "System Setup Options" on page 98).
b Connect the network cable to the network adapter card’s connectors. Do not connect the network
cable to the integrated network connector on the back panel of the computer.
13 Install any drivers required for the card as described in the card documentation.
Removing an Expansion Card
1 Follow the procedures in "Before You Begin" on page 59.
2 Gently push the release tab on the card retention door from the inside to pivot the door open. Because
the door is captive, it will remain in the open position.
3 If necessary, disconnect any cables connected to the card.
4 Remove the card:
If you are removing a PCI or PCI Express x1 card, grasp the card by its top corners and ease it out of its
connector. Then go to step 6.
If you are removing a PCI Express x16 card, go to step 5.
5 While pressing the lever, pull the card up and out of the card connector.
1 PCI Express x16 card 2 lever 3 securing slot
4 securing tab 5 PCI Express x16 card
connector
3 2
1
5
4