(The hardware connection method between the wireless router and the broadband modem (cat), the computer, behind the wireless router, there is usually one or several wan ports, which are used to connect the broadband modem (cat), and the other 4 or more The lan port (usual number) is used to connect to the computer, for laptops or desktop computers with built-in or external wireless network cards. Assuming you don't need to use a network cable, just leave these lan ports blank. Insert)