Dell Vostro 400 (Mid 2007) - Manual (Page 123)

Removing and Installing Parts
123
12 If you removed an add-in network connector:
a Enter system setup (see "System Setup" on page 174), go to Onboard
Devices and select Integrated NIC, and then change the setting
to On.
b Connect the network cable to the integrated connector on the back
panel of the computer. See "Back Panel Connectors" on page 20.
Bezel
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
CAUTION:
To guard against electrical shock, always unplug your computer from
the electrical outlet before removing the cover.
Removing the Bezel
1 Follow the procedures in "Before You Begin" on page 101.
2 Remove the computer cover (see "Removing the Computer Cover" on
page 103).