I live in pg county md with Comcast and this be the same modem that Comcast rent out . out of all the Docsis 3 modem , this one be the best in my opinion . the Motorola do not work with Comcast in PG county after many day of try . the zoom work fine but when restart take a long time to load up . this one be a bit more expensive but be fast and work great . I would recommend and buy this again for anyone of my customer . I fix computer for a living ... .