T25 SURFboard® DOCSIS® 3.1 Cable Modem for Xfinity Internet & Voice
XB3 | ModemGuides
Amazon.com: NETGEAR Cable Modem DOCSIS 3.1 (CM1000) Gigabit Modem, Compatible with All Major Cable Providers Including Xfinity, Spectrum, Cox, For Cable Plans Up to 1 Gbps : Electronics