Modem work great . nice compact size , approve for Comcast , and meet the latest protocol for the fastest available broadband . it would be better however if one could specify which cable provider they intend to use to avert problem with a unusable MAC address . in this digital age that should be very easy to do . it would have be a real hassle if the installer would have have to come out twice -lrb- new service so Comcast do not give I the option of a self-install -rrb- .