Amazon.co.jp: ARRIS cm820 a (Comcast Version) DOCSIS 3.0 Cable Modem [Bulk Packaing] by Arris : Computers
Amazon.com: Motorola MG7550 - Modem with Built in WiFi | Approved for Comcast Xfinity, Cox, Spectrum | For Plans Up to 300 Mbps | DOCSIS 3.0 + AC1900 WiFi Router | Power Boost Enabled : Electronics