TP-Link Archer MR400 is a dual-band AC1200 wireless router with built-in 4G LTE support via a SIM slot, offering reliable internet where fixed broadband is unavailable or as a failover. It delivers stable Wi‑Fi for streaming and gaming, featuring external antennas for improved coverage, Gigabit Ethernet ports for wired connections, easy setup and management through the Tether app, and security features such as guest access, parental controls, and WPA2 encryption to protect your home network.

The Archer MR400 is a router manufactured by the company TP-Link that allows multiple devices to connect to a network and communicate with each other. It works by receiving data packets from devices and forwarding them to their intended destination. The router is assigned a unique IP address , which serves as its identifier on the network.

To access the router's settings and configure its functions, users can log in using a web browser and their and . Once logged in, users can customize various settings such as network name, password, and security protocols. They can also set up parental controls, prioritize bandwidth usage, and monitor network activity.