Dell PowerVault MD1120 Installation Manual page 15

2 Push the mounting rail forward until the two mounting hooks enter their
square holes. Then, push down on the mounting-bracket flange until
the mounting hooks seat and the blue tab on the top mounting hook pops
out and clicks (see Figure 1-5).
3 At the back of the cabinet, pull back on the mounting-bracket flange until
the mounting hooks enter their square holes. Then, push down on the
flange until the mounting hooks seat and the blue tab pops out and clicks.
4 Repeat step 1 through step 3 for the mounting rail on the other side
of the rack.
5 Ensure that the mounting rails are mounted at the same vertical position
on both sides of the rack.
Rack Installation Guide
13