Used for two months and Comcast sent me their box no longer need. The Net gear AC1900 Dual Band Cable modem Wi-Fi router is designed to meet DOCSIS 3. 0 Specifications, making it 8x faster than DOCSIS 2. 0. Router provides speeds of up to 1. 9 Gbps. Ensure uninterrupted HD video streaming with industry's first 24x8 cable channel bonding, giving you the fastest download speeds, even during peak hours. Save up to 120 a year by eliminating Internet service provider rental fees. Ideal for Internet Cable services 200Mbps and above. Certified with XFINITY from Comcast, Cox, spectrum and more. Troubleshooting tip- when your modem router cannot access the Internet and your internet LED is on, register the cable Mac address or device Mac address of your modem router with your cable Internet provider.