Dell OptiPlex GX520 - Manual (Page 139)

6. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents.
7. Replace the computer cover .
8. Update your configuration information by setting the appropriate Drive option (0 or 1) under Drives. See " System Setup " for more information.
9. Verify that your computer works correctly by running the Dell Diagnostics .
Floppy Drive
Removing a Floppy Drive
1. Follow the procedures in " Before You Begin ."
2. Remove the CD/DVD drive and carefully set it aside.
3. Pull up on the drive release latch and slide the floppy drive towards the back of the computer. Then, lift up to remove the drive from the computer.
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 computer cover.
NOTE: Since the following steps do not require the complete removal of the CD/DVD drive, it is not necessary to disconnect the cables connecting the
CD/DVD drive.
NOTICE: Do not pull the drive out of the computer by the drive cables. Doing so may cause damage to cables and the cable connectors.