Dell Precision T3400 (Late 2007) - Manual (Page 174)

174
Adding and Replacing Parts
13 Replace the computer cover, (see "Replacing the Computer Cover" on
page 262).
NOTICE:
To connect a network cable, first plug the cable into the network port or
device and then plug it into the computer.
14 Connect your computer and devices to electrical outlets, and then turn
them on.
15 Update System Setup settings, as needed.
If you installed a sound card, enter System Setup (see "Entering System
Setup" on page 81), select Integrated Audio, and then change the setting
to Off.
If you installed a network adapter card, enter System Setup (see "Entering
System Setup" on page 81), select Integrated NIC, and then change the
setting to Off.
NOTE:
Connect your external audio devices or your network cable to the
connectors on the card. Do not use the connectors on the back panel of the
computer.
1 card retention door 2 release tab
1
2