I purchase this modem about 2 month ago and it mysteriously stop work about a week ago . I come to find out from Comcast that they do some technology upgrade to they line which make this modem not compatible with they high-speed internet service in the Atlanta region . not sure if these upgrade affect other market but you will run into the same issue . despite the incompatibility with Comcast now , this product be solid -lrb- as be most product that Cisco\/Linksys come out with -rrb- .