Linksys DOCSIS 3.0 8x4 Cable Modem Certified with Comcast Xfinity, Spectrum, Cox (CM3008) 4 Compatible with Comcast Xfinity, Time Warner Cable, Charter, Cox, Cablevision, and more. Requires Cable Internet Service Not compatible with: Verizon, AT&T, or CenturyLink Cable Modem only (no WiFi router)