ARRIS SURFboard (24x8) DOCSIS 3.0 Cable Modem / AC1750 Dual-Band Router / XFINITY Voice. Approved for XFINITY Comcast Only for plans up to 600 Mbps. (SVG2482AC) - Walmart.com
Amazon.com: NETGEAR Cable Modem CM500 - Compatible with All Cable Providers Including Xfinity by Comcast, Spectrum, Cox | for Cable Plans Up to 400Mbps | DOCSIS 3.0 : Everything Else
Best Cable Modems (for Comcast Xfinity): The Top 5 | DKT
ARRIS SURFboard 16x4 Cable Modem / AC1600 Dual-Band WiFi Router. Approved for XFINITY Comcast, Cox, Charter and most other Cable Internet providers for plans up to 300 Mbps. - Walmart.com