Commscope AC Adapter

Confirm that there is electric power at that outlet. Use a lamp or something else to check it. If there is power there, perhaps the device itself or the plug or cord that feeds it is malfunctioning.

@user_62c5f1 We would like to make sure your internet is working. Please send us a DM by following these instructions: Ensure you are first signed in, then you will see an icon at the top right of your page.
From there, click the 'New Message' icon. In the 'To' field, type 'Xfinity Support'.
Type your message in the text area that appears at the bottom of the window and hit enter to send. An official employee, such as myself or whoever is first available, will respond.