How to Remove 7055 Access Point from Wall Mount Bracket?

[mike_schumann]

I have a number of 7055 Access Points wall mounted in some condos.  I can't figure out how to remove these units from their wall plates.  It does not appear that there are any Torx Bracket Screws installed.

Any suggestions would be appreciated, so I don't have to destroy my walls to remove these units.

Thanks,