AMX MVP-7500 Operation/Reference Manual page 109

Setup Pages
If a server certificate is used, it should first be downloaded into the panel and the Certificate Authority field should then
be set to the name of that certificate file. No file path should be used for this setting as all certificates are stored in a
specific directory that the user cannot control or change. The most secure connection method uses a server certificate.
If no server certificate will be used then, this field should be left blank. If the field contains a file name, then a valid
certificate file with the same file name must be previously installed on the panel. Otherwise the authentication process
will fail.
MVP-7500/8400 Modero Viewpoint Wireless Touch Panels 95