M.2 drives are in the I/O tray that is accessed from the rear of the server.
Remove an M.2 drive The M.2 drive is in the I/O tray that is accessed from the rear of the server. After removing the I/O tray and the M.2 backplane, slide open the drive retainer and rotate the M.2 drive from the backplane.
Install an M.2 drive The M.2 drives are in the I/O tray that is accessed from the rear of the server. After removing the I/O tray and the M.2 backplane, insert the M.2 drives in the backplane and lock them in place with the drive retainer.