What is the password for my motorola surfboars sbv5220 modem?

I want to get into my motorola surfboard modem but there is username and password screen when i type 192.168.100.1 in my browser, does anyone know what it is?|||Most manufactures use admin and the password. Try that and if you put your own password but can't remember it, u can always reset the router so that will reset all the settings to default.|||The answer is probably on the bottom of the modem. For my modems and routers the passwords are all on the bottoms of the device. It may say that it is the password or not. It will probably be a series of numbers and letters. Try all the codes and see if they work.