June 13 , 2012 the modem do not connect to Comcast server , and the representative that be try to install it say that it be defective . I be currently try to exchange it for a new one , because base on the other review this seem to be a solid product , and I just get unlucky . UPDATE , July 8 , 2012 I finally receive my replacement modem after more than two week . I have to pay to ship it back to Digital Media Source , and additionally have to lease a modem from the cable company while I do not have one . overall this be a slow and expensive return\/exchange process , but the fact that I now have a function modem bump this from one star to two .