I would have give this modem 5 star , but the first one I receive be DOA . I could not get anything but the power light to come on . the second one work perfectly , and I can tell it be faster . speedtest dot net have I at about 6 mbp down and 3 mbp up with the RCA DOCSIS 2.0 modem Comcast provide , and with this one I be get 26 mbp down and 6 mbp up . I can not believe I put up with that so long ! it be funny too that Comcast be harass people who own they equipment to upgrade to DOCSIS 3.0 , but never bother to mention a need to upgrade to those who lease they modem . so far I be happy with this modem , and would recommend it to those who use Comcast . just remember give the full model 5341j and to speak slow , and repeat yourself when give they the MAC ID . the call center be overseas , and there be a BIG language barrier . it take a few time to get the information across . also , if you purchase this item from Modem Land , make sure it be the one that be full fill by Amazon -lrb- which be cover by Amazon 's return policy -rrb- . Modem Land 's direct return policy be horrible , and would leave you responsible for return shipping , and a possible 15 % restock fee .