here is the list of approved cable modem for Time Warner internet: http://www.timewarnercable.com/texas/support/topic.ashx/approve after you get the modem, you need to CALL them to add the MAC ( sometimes called HFC MAC ) on the back of the modem. They can immediately take effective over a phone call. In my recent case, they can monitor my modem online and even remote-reboot my modem. Most retail cable modems should work well, if not better than TWC's own:)