M5-COM is a Mercury device for replacement of the Casi Power and Communications controller board. As with the entire Mercury M5 Bridge family of controllers, the M5-COM is built with a matching form f...M5-COM is a Mercury device for replacement of the Casi Power and Communications controller board. As with the entire Mercury M5 Bridge family of controllers, the M5-COM is built with a matching form factor to the Casi Micro5 line of access control hardware allowing a fast “screwdriverless” change over and easy migration of a Casi client infrastructure to any Authentic Mercury software partner