Dell Precision 390 - Manual (Page 81)

6. Pull the desktop drive retention insert by the handle and set it aside in a safe place.
7. Slide the sliding-plate lever to the right to release the shoulder screw and slide the drive out of the 3.5- inch drive bay.
Installing a Floppy Drive or Media Card Reader (Desktop Computer)
1. Follow the procedures in Before You Begin .
2. Remove the computer cover (see Removing the Computer Cover ).
3. Remove the front panel. See Removing the Front Panel .
4. If you are installing a new floppy drive or Media Card Reader, remove the drive-panel insert (see Removing a Drive-Panel Insert ) and remove the
shoulder screws from the inside of the drive-panel insert and attach the screws to the new drive.
1 power cable 2 floppy-drive cable 3 floppy-drive connector (FLOPPY)
1 drive retention insert 2 sliding-plate lever 3 floppy drive