MiFi Router Used for Backup Broadband

We have had recent problems with our cable broadband circuit.  Was looking for a solution in which we could use a cellular (MiFi) hotspot with routing capabilities to run our network during outages.  I know most limit the number of connections to five.
Are there devices on the market which would allow a LAN connection to our firewall?

Most appear to have USB connections.  Would another option be to tether the hotspot to a Win 7 computer and run ICS?

Thanks
WebccAsked:
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Thomas GrassiSystems AdministratorCommented:
Take a look at Meraki MX60 or MX64 routers they do exactly what you require.

They have a usb port and will use 3G 4G devices as a backup for WAN

Great product

https://docs.meraki.com/display/MX/Meraki+MX60+Installation+Guide

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