Amazon.com: 4G VPN Router, Industrial Dual Sim 4G LTE WiFi Router 3G/4G Yeacomm YF325 Wireless Modem Router Unlocked with Sim Card Slot, External Antenna Cellular Modem in North/South America, NOT for Verizon :
InRouter301 | LTE Cellular Routers | Router with Serial Port – InHand Networks
Amazon.com: NETGEAR 4G LTE Modem with Two Gigabit Ethernet Ports – Instant Broadband Connection | Works with AT&T and Alternate Carriers (LB2120) : Electronics