Functional bur the SIM card tray is broken so it can't be used as a 4g modem. It can be used as a Wi-Fi router however.
The power supply is for an European outlet, but would work in the US with an adapter. Or could use a different power supply with the same plug and output parameters.
Tenda N300 4g modem/router (Bernardo & Iowa, Sunnyvale)
This offer has been gifted to someone and is no longer available.