The TP-Link TL-WR641G v4 is a wireless router that supports IEEE 802.11g and IEEE 802.11b wireless standards. It has a data transfer rate of up to 108 Mbps and features four 10/100Mbps LAN ports and one 10/100Mbps WAN port. The router also comes equipped with a built-in firewall and supports VPN pass-through. It can be set up easily through a web-based user interface, and supports various encryption standards including WEP, WPA, and WPA2.

The TL-WR641G v4 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 192.168.0.254, 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.