Dell XPS 410 (Mid 2007) - Manual (Page 122)

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Removing and Installing Parts
3 Lower the cover into place:
a Pivot the cover down.
b Press down on the right side of the cover until it closes.
c Press down on the left side of the cover until it closes.
4 Ensure that both sides of the cover are locked. If not, repeat all of step 3.
NOTICE:
To connect a network cable, first plug the cable into the network wall jack and then plug it into the
computer.
5 Connect your computer and devices to electrical outlets, and then turn them on.