(Preface: Although routers and wireless routers are popular and easy to use, there are still many brothers who have just touched the router and do not know how to set up the router. After all, it is not the same as the unmanaged switch. Manufacturers usually provide manuals, some of which are not concise and too cluttered, and some provide a fool-like installation wizard, but obviously cannot reflect the customization of settings. Today, we express it in the most simple and easy-to-understand way with pictures and texts, hoping to help the rookie brothers.)