Current Fargo Midco customers with Xstream Gig, or any other cities with Xstream Gig, will have to use a modem provided by Midco at this time. This is a DOCSIS 3.1 modem, ARRIS CM8200. The retail version SB8200 is available now but is still going through testing on Midco's network.
Our recommendation is a separate modem and wireless AC router for Midco. There is only one approved WiFi modem with the latest wireless standard AC and is hardly available in retail any more. You can achieve better wireless speeds by using a separate router and modem. It is also less expensive to replace one piece of equipment rather a modem / router combination.
A WiFi modem is a two-in-one unit as it combines a modem and router. These are easier to setup for the less tech savvy person, and take up less shelf space.