what more can I say ? plug it in , call comcast , read they the MAC address -lrb- I wish the font be bigger -rrb- and there be no drama . special note - Comcast list this cable modem as approve but there be other modem on they list that seem to have go through and pass a higher level of testing . that be a concern . for I , it the ubee have be a solid little performer . incidentally - I replace a motorolum surfboard with this ubee . it turn out that the problem be a splitter in the cable . I now have the surfboard as a spare . as soon as I hear anything about ipv6 though , that surfboard be go back in because it be ipv6 compatible and this ubee be not .