Max Download Speed: 343 Mbps

3 Products in 1: 8×4 DOCSIS 3.0 Cable Modem + AC1750 Wi-Fi Router + Xfinity telephony
APPROVED for use with Comcast Xfinity Internet & Voice Service with RDK-B technology to support next-gen products and services
Does NOT support XFINITY Home Security or Home Control Service without also having an XFINITY Home Router from Comcast that only Comcast can provide; NOT approved on any other Cable Internet Providers

Compatible with Time Warner Cable, Charter, Cox, Cablevision, and more
Not compatible with Verizon FiOS or AT&T U-verse, no longer approved by Comcast Xfinity
Requires Cable Iternet Service, if not sure your provider is CABLE call them to confirm