The Dasan H640DW Viettel router is a high-performance wireless router designed to provide fast and reliable internet connectivity in homes and small offices. It features a dual-band Wi-Fi system that operates on both 2.4GHz and 5GHz frequencies, providing speeds of up to 1167Mbps. The router also comes with four Gigabit Ethernet ports, allowing users to connect wired devices for faster data transfer. Its advanced security features protect users from online threats, while its easy-to-use interface makes it easy to set up and manage the network.

The H640DW Viettel is a router manufactured by the company Dasan 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 user and user. 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.