Dell PowerEdge C8220X Hardware Owner's Manual page 254

Remove the four screws securing the front card assembly to the sled
c
cover. See Figure 3-78.
Grasp the card assembly by its edges, and carefully remove it from the
d
front GPGPU card riser. See Figure 3-78.
Figure 3-78. Removing and Installing the Front Xeon Phi 5110P/7120P Card Assembly
1
3
1 M3 screws (4)
3 front GPGPU card riser
254
Installing System Components
2
2 Xeon Phi 5110P/7120P card