A router is typically used to connect a computer to a network. It serves as a gateway through which data is transmitted between devices and the internet, allowing multiple devices to connect and communicate efficiently. By directing data traffic, routers ensure that information reaches its intended destination. In addition to connectivity, many routers provide various security features, such as firewalls, to protect the network from unauthorized access or threats. Overall, the router plays a critical role in networking, enabling reliable and fast digital communication.