IBM Power Systems RDX Manual page 32

11. Slide the internal RDX docking station into the system until it locks into place as shown in Figure 14
on page 18 or Figure 15 on page 19.
Figure 14. Replacing the internal RDX docking station from a rack-mounted system
18 Power Systems: RDX docking stations, power cable, and removable disk drives for the 9009-41A, 9009-42A,
or 9223-42H