order this modem as it be on Comcast 's approve list with 3 star and have receive good rating and review on other site . it replace we modem that be past useful age and keep drop the connection . very easy to setup . install it , call Comcast , give they the MAC number and that be it . no more disconnect and it seem to have add some speed to we connection . would suggest that it be install where there be plenty of air circulation . tend to run a little warm . Vendor ship the product promptly . pleased with my purchase decision .