Lenovo ThinkStation P720 Hardware Maintenance Manual page 198

a. If necessary, remove the dummy bezel. Press the two clips toward each other as shown and push
the dummy bezel out of the flex module.
Figure 168. Removing the dummy bezel
b. Insert the four-digit-diagnostics-display cable into the corresponding slot. Then, push the four-digit
diagnostics display as shown until it snaps into position.
Figure 169. Installing the four-digit diagnostics display
192
P720 Hardware Maintenance Manual