You can change the Modem Login User Name and Password by opening a browser on a connected computer and entering 192.168.0.1 on the browser address line. This will take you to the modem login screen. The default login is
User name: admin
Once you are logged into the unit, select Advanced at the top of the screen, and then Status and Security.
You will need to enter the Current Username and Password, and then the new Username and Password. Your new Password will have to be entered twice. Both the Username and Password fields accept entries up to 15 characters long. Both Username and Password may include lower- and upper-case letters (a – z, A – Z) and numbers (0 – 9). Special characters are not allowed. Be sure to click Save to write your changes to memory.
Caution: Once you make this change, you will not be able to log into the modem if you forget the new Username and Password. To recover, you will have to reset the modem to factory defaults. When you reset the device to factory defaults, you will lose all changes you have made to the modem.