Lenovo ThinkStation P720 Hardware Maintenance Manual page 201

a. If necessary, remove the dummy bezel. Then install the bezel in the front Thunderbolt adapter kit to
the flex module.
Figure 174. Installing the bezel to the flex module
b. Align the four holes in the front Thunderbolt I/O adapter with the corresponding mounting studs on
the bracket. Then, press the card downward until it snaps into position.
Figure 175. Installing the front Thunderbolt I/O adapter into the retaining bracket
.
Chapter 9 Hardware removal and installation
195