The Sagemcom Fast 3864AC is a dual-band wireless router that offers fast and reliable internet connectivity for home or small office use. It supports 802.11ac Wi-Fi technology for high-speed wireless connections and has four Gigabit Ethernet ports for wired devices. The router also features a USB port for easy file sharing and media streaming. With advanced security features and easy setup, the Sagemcom Fast 3864AC provides a seamless internet experience.

The Fast 3864AC is a router manufactured by the company Sagemcom 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.