How to install a fast router?

The installation of routers is basically the same. The network cable from the lan port of the optical cat is connected to the WAN port of the router, and then the network cable from the lan port of the router is connected to the computer or switch. The setting method is similar, but the page is different. They all enter the management page, set the account password given by the operator behind the WAN port, and then set the name and password of WiFi.