Lenovo ThinkStation P920 Tower Workstation - Manual (Page 105)

b. Reinstall the cover of the carrier as shown and reinstall the screws to secure the cover.
Figure 66. Installing the cover of the M.2 solid-state drive carrier
c. Reinstall the carrier into the bracket as shown until it snaps in to position. Lock the carrier with the
key. Always store the key in a secure place.
Figure 67. Reinstalling the M.2 solid-state drive carrier
M.2 solid-state drive in the M.2 solid-sate drive holder
To remove or install an M.2 solid-state drive in the M.2 solid-sate drive holder, do the following:
Chapter 7 . Hardware removal and installation 93