Best Buy: NETGEAR Nighthawk AC3200 Wi-Fi Router with DOCSIS 3.1 Cable Modem C7800-200NAS
Amazon.com: NETGEAR Cable Modem CM400 Compatible with Cable Providers Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 100 Mbps | DOCSIS3.0, Black (CM400-100NAS) : Electronics