Dell OptiPlex GX280 - Manual (Page 341)

10. Close the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
11. Connect your computer and devices to their electrical outlets, and turn them on.
12. See the documentation that came with the drive for instructions on installing any software required for drive operation.
After you open and close the cover, the chassis intrusion detector, if installed and enabled, causes the following
message to appear on the screen at the next computer start-up:
ALERT! Cover was previously removed.
13. Reset the chassis intrusion detector by changing Chassis Intrusion to On or On-Silent.
NOTE: If an admin password has been assigned by someone else, contact your network administrator for information
on resetting the chassis intrusion detector.
Drive-Panel Inserts
If you are installing a new floppy or CD/DVD drive instead of replacing a drive, remove the drive-panel inserts.
1. Follow the procedures in " Before You Begin ."
2. Remove the drive panel by pressing the drive release tab.
1 drive panel
2 release tab
3. Select the insert in front of the drive bay that you want to use.
4. Gently press the release tab of the insert to remove it from the drive bay panel.