Dell XPS 720 H2C (Mid 2007) - Manual (Page 105)

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