Dell PowerEdge C8220X Hardware Owner's Manual page 247

If applicable, release the cables from the retaining clips on the sled
e
cover.
Press down the cable-locking tabs and disconnect the power cables
f
from the back GPGPU card. See Figure 3-74.
Disconnect the emergency throttling cable from the back GPGPU
g
card. See Figure 3-74.
Figure 3-74. Removing and Installing the Back GPGPU Card Cables
1 cable-locking tabs (2)
3 power cable
1
2 power cable
4 emergency throttling cable
Installing System Components
2
4
3
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