A:Answer I was also renting a similar model from my Internet provider (Comcast). I purchased the ARRIS SBG6950 as a compatible replacement. The AC1900 should be a compatible replacement, however, I would recommend looking on your provider's website for a list of compatible modem based on your Internet requirement (ie, speed). The provide should have a list of compatible modems; try the FAQ if you don't know where to start.