IBM Power Systems RDX Manual page 63

Figure 42. Installing the service access cover
For a stand-alone system, complete the following steps. Refer to Figure 43 on page 50.
a. Slide the cover (B) on to the system unit as shown.
b. Close the latch release (A) by pushing it in the direction shown.
RDX docking stations, removable disk drives, and power cable, for the 9009-41A, 9009-42A, or 9223-42H 49