Removing and Installing Parts 105
  NOTICE: To connect a network cable, first plug the cable into the network port or device and then plug the cable 
into the computer.
12
If present, lower the card retention device that lays over the installed cards and snap it into place.
13
Replace the computer cover (see "Replacing the Computer Cover" on page 160), reconnect the 
computer and devices to electrical outlets, and then turn them on.
Network Adapter and Sound Card Settings
If you installed a sound card:
1
Enter system setup (see "Entering System Setup" on page 168), select 
Integrated Audio Controller
, 
and then change the setting to 
Off
.
2
Connect external audio devices to the sound card connectors. Do not connect external audio devices 
to the microphone, speaker/headphone, or line-in connectors on the back panel.
If you removed a sound card:
1
Enter system setup (see "Entering System Setup" on page 168), select 
Integrated Audio Controller
, 
and then change the setting to 
On
.
2
Connect external audio devices to the audio connectors on the back panel of the computer.
1 graphics card bridge (not 
present on some dual graphics 
card configurations)
2 power connectors (2) 3 dual-PCI Express graphics 
cards
1
3
2