D-Link [Certified Refurbished] 4G LTE (Cat 4) to Gigabit Ethernet Modem/Bridge - Best for M2M Applications - Works on Verizon or AT&T (DWM-311-B1/RE)

[Certified Refurbished] This device has been reconditioned by D-Link US (D-Link Systems, Inc.). The device has been upgraded to the latest device firmware and all features tested. All parts have been checked for good functionality, and any missing or bad parts have been replaced.   Depending on the availability device may get original packaging or updated to brown box safe for shipping. The device comes with a 6-month warranty. Best for M2M Applications, Supports OpenVPN, Optional Enterprise Service Platform, Works on Verizon and AT&T 4G M2M CONNECTIVITY MADE EASY: Easily share a 4G LTE network via Sim Card with M2M devices; Ideal for connectivity where there is no broadband coverage; Unlocked and compatible with major carriers such as Verizon and AT&T VERSATILE SMART APPLICATIONS: A cost-effective solution for M2M connectivity for SMART RETAIL, SMART CITY, SMART FACTORY scenarios where remote 24/7 network connectivity is required PERFECT FOR: vending machines, ATM, P