D-Link DWR-921 3G 4G LTE SIM Slot 10/100 LAN WiFi Wireless N Router 2x Antennas 790069406577 | eBay
KuWFi 4G Router with SIM Card Slot Unlocked, 1200Mbps LTE Router Dual Band Gigabit Cellular Router with External Antenna, EC25-AF Module Support DDNS/VPN/QoS, Up to 64 Users[with 1G LTE Data SIM Card]
R350 Series car WIFI GPS Dual sim 4G LTE router with sim card slot and external SMA antenna - AliExpress
4G LTE Plug-and-Play Wireless Router with SIM Card Slot, Wireless Transmission Speed Up to 300mbps, Support up to 32 Users at The Same Time - Newegg.com
Amazon.com: KuWFi 4G LTE Router with SIM Card Slot, Unlocked 4G WiFi Router with External Antennas, Industrial Wireless CPE Internet Routers for Home/Office, Work with AT&T and T-Mobile : Electronics