Dell PowerEdge C6220 II - Manual (Page 265)

Removing and Installing System Components | 265
Figure 3-80. Removing and Installing the Middle-Wall Bracket
1 middle-wall bracket 2 screw (6)
7 Disconnect all the cables from the upper middle plane.
Note the routing of the cable on the chassis as you remove them from
the system. You must route these cables properly when you replace
them to prevent the cables from being pinched or crimped.
8 Remove the screw that secures the power cable cover to the upper
middle plane. See Figure 3-81.
9 Lift it up straight from the locking hole on the upper middle plane.
Then, lift it completely out of the upper middle plane. See Figure 3-81.