Hello,    I'm currently testing an additional cellular modem to MX84 / as a backup for Network failover. ( WAN 1 and WAN 2 fail).    Is there documentation for that ?? I'm currently reviewing -   https://documentation.meraki.com/MX/Cellular/3G%2F%2F4G_Cellular_Failover_with_USB_Modems   I would like to confirm if the purchased model is acceptable for MX84  -I currently purchased Nighthawk LTE mobile hotspot  / Model - MR1100.   upon connecting the modem directly to MX84 I don't see any indication of the connected modem.  how do I proceed further in knowing if my modem is compatible ?  also do I need to manually enable the USB port in MX84 in the dashboard?    Any advice on this is highly appreciated   Thanks.          ... View more