Hi  julbrich1,

As you are looking for the default password we have 2 types of default passwords one is the login password of the web manager and the other Wi-Fi default password.

If you require the login password of the web manager it will be as username: admin and password: password (in lowercase).

Check on the below link to access the web manager page :

http://arris.force.com/consumers/articles/General_FAQs/SBG10-Web-Manager-Access

If you require a Wi-Fi password please check at the bottom label of the gateway you will be able to see the 2.4GHz SSID / 5GHz SSID and Wi-Fi Security Key.

Check on the below link for locating the default name and password :

http://arris.force.com/consumers/articles/General_FAQs/SBG10-First-Time-Installation

Let us know if this helps.