Lenovo ThinkCentre M90s User Manual page 63

d. Remove the M.2 solid-state drive.
e. Remove the film that covers the thermal pad, if any. Then, install the M.2 solid-state drive.
f. Remove the film that covers the thermal pad, if any. Then, install the heat sink.
g. Install the heat sink with the bracket.
. 57
Chapter 7 CRU replacement