The TP-Link TL-MR6400 is a 4G LTE wireless router with a built-in SIM card slot, offering up to 300Mbps wireless speed on the 2.4GHz band. It allows users to establish a high-speed internet connection by inserting a SIM card, without requiring a modem. This versatile router features easy setup, stable coverage, and compatibility with a wide range of 4G LTE networks, making it ideal for remote areas or mobile setups. It also includes 4 Ethernet ports for wired connections.