Dell PowerEdge C6220 II Hardware Owner's Manual page 266

15 Remove the screws that secure the mid-plane holder to the chassis. See
Figure 3-82.
16 Lift the mid-plane holder out of the chassis. See Figure 3-82.
Figure 3-82. Removing and Installing the Mid-plane Holder
1 screw (6)
17 Disconnect all the cables from the lower 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.
18 Remove the power cable cover from the lower middle plane. See Figure
3-78.
19 Remove the four power cables from the lower middle plane. See Figure
3-79.
266 | Installing System Components
2 mid-plane holder