Dell OptiPlex GX50 Systems Service Manual page 49

1 Tabs (2)
2 Hard drive
4. If the replacement drive does not have the bracket rails attached, remove the rails from the old drive by removing the
two screws that secure each rail to the drive.
Drive Brackets Rails
Small Mini-Tower Computer
1. Disconnect the power and hard-drive data cables from the drive.
Removing Cables—Small Mini-Tower Computer