Dell OptiPlex GX280 - Manual (Page 100)

11. Close the computer cover.
12. Attach the computer stand, if used.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
13. Connect your computer and devices to electrical outlets, and turn them on.
Mini Tower Computer
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in
the Product Information Guide.
1. Follow the procedures in " Before You Begin ."
2. Disconnect the DC power cables from the system board and the drives.
Note the routing of the DC power cables underneath the tabs in the computer frame as you remove them from the
system board and drives. You must route these cables properly when you replace them to prevent their being pinched
or crimped.
3. Remove the four screws that attach the power supply to the back of the computer frame.
4. Press the release button located on the floor of the computer frame.