Review on TP-LINK Archer C7 AC1750 Dual Band Wireless AC Gigabit Router - Renewed with Two USB Ports, IPv6 and Guest Network by Nguyn ng Qun  (D Nhn ᠌

I have been using it for over 3 years. It worked without problems on the wire, as soon as I switched to a USB modem, which is supported by the router, then periodically the modem itself began to fall off. It is not possible to connect it from the Tether application. I wrote about the problem to TPlink technical support, the problem was solved for 1.5 months, but they were not solved! If you plan to use a USB modem, then I do not recommend this router!