IBM Power Systems RDX Manual page 36

Figure 18. Replacing the air baffle in a stand-alone system
14. For a stand-alone system, close the front door. Insert the front door key into the lock as shown in
Figure 19 on page 23. Twist the key to the right (clockwise) to lock the door. Horizontal is locked;
vertical is unlocked.
22 Power Systems: RDX docking stations, power cable, and removable disk drives for the 9009-41A, 9009-42A,
or 9223-42H