Lenovo ThinkStation P520 Hardware Maintenance Manual page 195

Figure 153. Removing the flex module cover
5. To remove a front Thunderbolt I/O adapter, do the following:
a. Remove all the cables connected to the front Thunderbolt I/O adapter.
b. Pull the clip as shown to remove the front Thunderbolt I/O adapter and the retaining bracket out of
the flex module.
Figure 154. Removing the front Thunderbolt adapter and the retaining bracket out of the flex module
c. Flex the four clips on the sides of the retaining bracket to remove the front Thunderbolt I/O adapter
from the bracket.
Figure 155. Removing the front Thunderbolt I/O adapter from the retaining bracket
6. To install a front Thunderbolt I/O adapter, do the following:
a. If necessary, remove the dummy bezel. Then, install the bezel in the front Thunderbolt adapter kit to
the flex module.
.
Chapter 9 Hardware removal and installation
187