I be in a bind and I need it in a hurry . it arrive earlier than promise and in good condition . imagine my surprise when the technician plug it in and it would not connect . I be in a bind so I have to rent one of they modem until I could replace it . my other option be to wait and pay for another service call ... I need the connection asap . I buy a better cable modem at the big box and get a much better deal . and it work when we connect it and plug it in . foolish I , I do not shop the price like I should have . the exact same modem be $ 30 cheaper at the big box . I return the modem to Amazon . no muss , no fuss , no hassle . they reverse the charge promptly . this transaction have change my opinion of shopping at Amazon . two bad experience with Amazon within the same month . I will be more careful with future purchase .