The Ericsson MBR L21 4G LTE router is a high-speed wireless router that provides fast and reliable internet connection for homes and small businesses. It supports LTE Cat4 technology, allowing download speeds of up to 150 Mbps and upload speeds of up to 50 Mbps. The router has four Ethernet ports for wired connections and can connect up to 32 Wi-Fi devices at once. It also has a user-friendly interface and easy setup process.

The MBR L21 4G LTE is a router manufactured by the company Ericsson 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.