. The NETGEAR LTE Modem LB2120 gives you a simple fail-safe connectivity solution for your devices or services avoiding disruptions in broadband when your fixed wire line goes down. Simply connect your existing wire line broadband connection to this modem to provide an automatic 4G LTE or 3G broadband backup connectionKey Product Info . Connects directly to a computer or wireless router to give you high-speed DSL Internet accessSecure and super-fast 4G LTE connectivity with 3G fallbackGigabit Ethernet port for connection pass-through