A:Answer This modem does not have "AC" however, it supports 802.11ac. The "AC" has to do with the speed on the wireless connection. This cable modem sends and receives from an Internet provider. Once the signal reaches the modem from the outside, it is usually connected to a wireless router that then enables the signal to be sent wirelessly. This is where the 802.11ac would apply. Some models integrate the modem and the router. If that is the case, then a modem/router would list the "AC" in the specs. The combined modem/router in my opinion is a more risky purchase. As with any combined product, if one fails, both must be replaced.
