IBM RT PC Options Installation page 50

4. Hold the drive with the printed circuit board on the bottom and the
connectors toward the center of the unit.
Printed
Circuit
Board
5. Facing the rear of the unit, place the drive on the side rails and slide it
into drive position C. Push the drive in until the plastic latches snap into
position, holding the drive in place.
Plastic Latch
l~~~'~~~~~~F==--
Plastic Latches
Section 2. Removing and Installing Drives in IBM 6150
2-13