I decide to upgrade my modem as the old one be , well ... old . I receive the modem , hook it up , call the cable co -lrb- time Warner -rrb- and after a hour it be determine I get a bad one . I contact Amazon and be send a replacement -lrb- prop to Amazon , fast and no hassle -rrb- . this one work , and work very well ... so far . my upload\/download speed have almost double . so far it look like money well spend ...