Lenovo ThinkStation PX Manual page 10

4. Lay the M.2 carrier flat on a desk and carefully separate the heatsink from
the carrier by releasing the four tabs away from the heatsink.
5. Remove the plastic insert as well as the thermal pad plastic film piece.
Remove plastic insert
Remove plastic film
6. Insert the M.2 drive carefully in the M.2 bracket as shown below.
Insert M.2 drive
10