NETGEAR Cable Modem 8x4 DOCSIS 3.0  (NO WIRELESS/MODEM ONLY) Works for Xfinity from Comcast, Spectrum, Cox, Cablevision & More (CM400-1AZNAS) Support Cable Internet Service plans up to 100 Mbps. Separate router required for WiFi DOCSIS 3.0 Cable Modem with 1 Gigabit Ethernet port. DOCSIS 3.0 up to 8x faster download speeds than DOCSIS 2.0 ELIMINTE MONTHLY CABLE MODEM RENTAL FEES - Up to $156 per year Not compatible with: Verizon, AT&T, or CenturyLink. Not compatible with bundled voice services Compatible with Xfinity from Comcast, Spectrum, Cox, CableONE & more Ideal for streaming HD videos, faster downloads, and high-speed online gaming