The Sagem Fast 2604 is a router designed for Topnet internet service providers. It supports both ADSL and ADSL2+ technologies and provides wireless connectivity with speeds up to 54Mbps. The router features a firewall to protect against unauthorized access, and supports WPA and WPA2 encryption for secure wireless communication. It also includes four Ethernet ports for wired connections to devices such as PCs and gaming consoles. The Sagem Fast 2604 is a reliable and efficient router for home and small office use.

The Fast 2604 Topnet is a router manufactured by the company Sagem 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 192.168.1.1, 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 admin. 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.