The DCT6416 is a Motorola cable box. If I'm not mistaken, they are sold only by the manufaturer only to cable companies only to be rented to end users. There are several reasons for it, mostly cost effective. The chance of Comcast, Insight, Cox, TWC, etc. authorizing use on their systems is virtually nil in the USA. Check with the tech, but I'm pretty sure of it. Good luck with the seller.