Dell PowerVault MD1120 Hardware Owner's Manual page 40

Figure 3-8. Removing and Replacing the EMM/Power Supply Cage
1
1 screws (7)
2 removal ring
5 Grasp the cage removal ring in the bottom center of the rear enclosure.
Pull out and lift up and over the alignment pins to remove the cage from
the enclosure.
6 Remove the six Phillips screws holding the midplane in place and pull it
out of the enclosure. (See Figure 3-9.)
7 To re-install the midplane, reverse the previous steps.
40
Installing Enclosure Components
2
3 alignment pin (6)
4 EMM/power supply cage
4
3