use this with WOW cable network internet service . save my 5 buck a month . one significant issue however . even though the first rep I talk to before i buy it , say I could use ANY DOCSIS 3.0 modem with WOW , when I go to have it authorize with they a couple of week later , the first person I talk to say they could not do it with the number I give they off the outside of the unit . he say they computer be not accept what I give he . he tell I to hook it up , open up the modem menu on the computer and get I different number , or to call motorolum and have they help I , or both . which I do . after the call to motorlum I get some new number to give the WOW people . of course , the new number do not work . fortunately this second wow operator seem to know more than the first kid and indeed , manage to make the FIRST number I give she from the outside of the unit work . I do not know the detail or how , I be not a techie , she just make it work and say she be sorry for waste my time with all the other garbage and the call to motorolum , etc. . apparently this unit be so new , that the number on outside of the unit be not immediately recognize by they system as a acceptable modem and she have to manually sort of `` force '' the system to take they . I do not really know . maybe it be some sort of voodoo magic , but she make it work after some significant time futse around on she end . she say the 6120 , the older version of this unit be immediately recognizable to they system and she be do load of they in a matter of seconds . so , my advice to you , especially if you be a WOW customer , be to get the damn older unit , the 6120 and make it easier on yourself and you WOW rep. now it work just fine . so all be good in my little corner of Ohio . it be just a pain in the butt to activate it .