How to factory reset ZyXEL NWA-3160 router - Default Login & Password - How to Factory reset Your Router - Routers' Specifications, Manuals and Factory reset Information
How to Login Zyxel Router - Find Default User, Password, IP - Modem Friendly
Zyxel Default Password - Tech-FAQ
Accessing your router via Web GUI – Zyxel Support Campus EMEA