The TP-Link Archer CR1900 is a cable modem router that supports DOCSIS 3.0 technology for fast internet speeds. It features an AC1900 dual-band Wi-Fi with beamforming technology for wider coverage and improved connectivity. The device also comes with four Gigabit Ethernet ports for wired connections and a USB 2.0 port for sharing files and media across the network. It is compatible with most major cable internet providers and is easy to set up and manage through the TP-Link Tether app.

The Archer CR1900 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 192.168.1.1, 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 blank and password. 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.