A TP-Link 300Mbps Wireless N 4G LTE router, like the TL-MR6400, utilizes a Nano SIM card slot for its 4G/LTE internet connection. This router allows you to share a 4G LTE network with multiple Wi-Fi devices. It also includes an Ethernet port that can function as a WAN port for connecting to a modem or as a LAN port for wired connections