hook it up and only take about 5 min for the firmware to install . go from 12 mb which be what im pay for to 16 . Becareful if you have comcast . after 5 seond after give the serial to the comcast rep she tell I that she wasnt get a signal and I need to send this modem back and keep theirs . I tell she she didnt even let it boot up but she didnt care . after the firmware install it come up and work right away . call again to have they pick up the old modem and they still say the modem wasnt give a signal even though I be on the web while on the phone . they will lie to you and ignore you to keep you pay the rental fee . now they will not pick it up with out I pay some bull % $ # @ fee . now im look for cable box to buy because I have have it with comcast . back to the point . so far so good .