The FRITZ!Box 5491 is an all-in-one fiber-optic router and ONT that delivers reliable, high-performance home networking. It combines dual-band Wi‑Fi, multiple gigabit Ethernet ports and USB connectivity with a DECT base station for cordless telephony. FRITZ!OS offers intuitive setup, robust firewall, VPN, parental controls and smart home integration. Mesh-capable and regularly updated, the 5491 is designed to simplify fiber installations while providing fast, secure internet access and advanced telephony features for modern households and reliability.

The 5491 is a router manufactured by the company FRITZ BOX 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 192.168.178.1, 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 admin 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.