buy this before read the review , and it turn out to be total junk . my cable company , whose name be prominently display on this thing 's box , spend 2 hour on the phone with I and we could not get this thing to work at all , so come back here to Amazon and go with a surfboard - which work perfectly out of the box , take the cable company two minute to activate and do . do not waste you time with this turkey . too bad there be not zero star .