Dell PowerEdge C6220 - Manual (Page 253)

Installing System Components | 253
13 Remove the screws that secure the mid-plane holder support to the
chassis. See Figure 3-72.
14 Lift the mid-plane holder support out of the chassis. See Figure 3-72.
Figure 3-72. Removing and Installing the Mid-plane Holder Support
1 screw (3) 2 mid-plane holder support