Cannot open backplate, are there any hidden screws?

I have un-screwed all 10 small screws, but it still doesnt come off. Trying to remove the m2 drive to format it outside for a new windows 10 education, then put it back in.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0