If you are just looking to block mass storage USB devices you can use the following profile <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>PayloadContent</key> <array> <dict> <key>PayloadDescription</key> <string>Configures Allowed Media settings</string> <key>PayloadDisplayName</key> <string>Allowed Media</string> <key>PayloadIdentifier</key> <string>9D5EA197-E941-48CD-84BA-28373017A52C.com.apple.systemuiserver.2C31DE6A-E143-4800-ABD4-369EA4474521</string> <key>PayloadOrganization</key> <string>MegaCorp</string> <key>PayloadType</key> <string>com.apple.systemuiserver</string> <key>PayloadUUID</key> <string>2C31DE6A-E143-4800-ABD4-369EA4474521</string> <key>PayloadVersion</key> <integer>1</integer> <key>logout-eject</key> <dict> <key>harddisk-external</key> <array> <string>deny</string> <string>eject</string> </array> </dict> <key>mount-controls</key> <dict> <key>harddisk-external</key> <array> <string>deny</string> <string>eject</string> </array> </dict> <key>unmount-controls</key> <dict> <key>harddisk-external</key> <array> <string>deny</string> <string>eject</string> </array> </dict> </dict> </array> <key>PayloadDescription</key> <string>USB Management</string> <key>PayloadDisplayName</key> <string>USB Settings</string> <key>PayloadIdentifier</key> <string>9D5EA197-E941-48CD-84BA-28373017A52C</string> <key>PayloadOrganization</key> <string>MegaCorp</string> <key>PayloadScope</key> <string>System</string> <key>PayloadType</key> <string>Configuration</string> <key>PayloadUUID</key> <string>9D5EA197-E941-48CD-84BA-28373017A52C</string> <key>PayloadVersion</key> <integer>1</integer> </dict> </plist> ... View more

Hi @AjitKumar,   Thank you for the quick response I have read a few threads but not the one you have linked.   I will read through it and try to configure the devices and revert back if it has worked.   ... View more