Dell Vostro 220s Service Manual page 54

1 3.5-inch bay break-away metal plate
To remove the 3.5-inch bay break-away metal plate, insert the tip of a Phillips screwdriver into the slot on the plate, and
rotate the screwdriver outwards for leverage to twist and ultimately break the two metal tabs that attach the plate to the
chassis.
NOTE: Discard the 3.5-inch bay metal plate once it is removed. It is not designed for reuse. A front-panel insert is
available for covering the opening of the empty 3.5-inch bay (once the break-away metal plate has been initially
removed) should you decide to permanently remove a device from the 3.5-inch bay.
The break-away metal plates for the 5.25-inch drive bays can be reused as front-panel inserts to cover an empty 5.25-inch
drive bay. Before removing a metal plate for an optical drive bay (5.25-inch drive bay), notice whether it is still a break-away
plate or whether it is attached with two screws. Remove the two screws, if installed, or use the Phillips screwdriver to break
away the plate, as appropriate.
1 5.25-inch bay metal plate (for empty optical-drive bay
NOTE: Store 5.25-inch metal plates for reuse should you decide to permanently remove an optical drive in the future.
Only the break-away metal plates for the optical drive bays have screw holes for reuse. An empty optical-drive bay
opening must be covered by a metal plate (front-panel insert) to retain FCC ratings.