I buy this cable modem to replace a dead one I originally buy several year ago from the cable company . it be easy to install and set up . the only hangup be when I call the cable company to give they the MAC number so they system could communicate with it . they initially say the number I give they be not valid , but they finally accept it . they only reason I do not give it a 5-star review be that it be DOCSIS 2 . o , not DOCSIS 3.0 . my cable company do not support DOCSIS 3.0 yet , but it would have be nice to have it in case they upgrade they system . I look for a Cisco\/Linksys 3.0 unit , as I have have good result with they equipment , but could not locate one on Amazon .