A:Answer Does this work with Optimum Cable? In asking before I found this product, Optimum tech fellow said to find modem with DOCSIS 3.0, which this has. I already have 400 upload speed through them and know it can go beyond that so that is good. I presently am using a Portal router that I love as it chooses the best band or signal too, but am putting that aside for this duo. I like that this will have the same brand for both router and modem. Also like the router and modem separate as you have them, since I am doing online conference streaming to teach and prefer direct connection from my computer for that and then the wi-fi for my phone and iPad. It is arriving today so want to be sure I will be ok for Optimum service. I know that have to put info in myself and not on the cable page online. Are you finding it is compatible? I have all Apple MAC products, but your site says that is fine, so just using with Optimum. IF not... I need to know alternative ways to get phone and internet service for this duo! I would use gmail for emails. Biggest concern is internet for Zoom, all else. Phone, internet in general.