NETGEAR® Nighthawk® ultra-high-speed cable modem for XFINITY® Voice (CM1150V) delivers gigabit-speed cable Internet and the perfect call clarity. This DOCSIS® 3.1 cable modem with voice supports all of today's Internet service plans and is designed for high-performance Internet in the future. CM1150V includes two telephone ports that automatically prioritize voice over Internet for clear and uninterrupted calls.  Features Cable Modem only. External Router needed This is a cable modem. Separate WiFi router required for WiFi connectivity. Recommended to pair with a NETGEAR WiFi router. Compatible with Xfinity Internet and Voice Service Certified by Comcast for Xfinity. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and non Xfinity voice services. Contact your Internet Service Provider for additional compatibility information. Optimize your Internet With an outdated modem, you may not be getting the Internet speeds you paid for. Update your equipment to get better upload and download speeds, and a better Internet experience at home. Works with any WiFi Router Connect any WiFi router to this modem's Ethernet port to support all your wireless devices. Voice Phone Support For use with Xfinity Voice service and up to 2 telephone lines with enhanced call features including caller ID, 3 way conference calling, call forwarding and more Save on monthly rental fees Is your cable service provider charging you every month to lease their equipment? Save money by buying and owning your cable modem or cable modem router. Replace your rented equipment can save you up to $168/yr in rental fees. Best for cable provider plans up to 1 Gigabit speed 32x8 Channel Bonding and DOCSIS 3.1 technology delivers the fastest Internet to your home - even during peak Internet usage hours! DOCSIS 3.1 technology Upgrading to a DOCSIS 3.1 modem means you'll still enjoy your current Internet service and be ready for the fastest speeds available in your service area. Get up to 10x faster download speeds than the DOCSIS 3.0 standard. Fully backward-compatible with previous DOCSIS standards. Ethernet Port 4 Gigabit Ethernet ports connect to your computer or separate WiFi router. Link aggregate two (2) LAN ports to double maximum wired speeds with compatible WiFi routers Take your smart home to the next level with this ASUS router. Boosted Wi-Fi speeds and intelligent signals streaming directly to each of your devices will keep your busy wireless network running smoothly, just the way you want.  Features Wireless-AC Broadcom® NitroQAM ™ technology delivers data speeds of up to 3100 Mbps on a dual-band 2.4GHz/5.0GHz frequency. Backward compatible with 802.11a/b/g/n networks, so you can easily upgrade. Built-in game accelerator Make the most of your network bandwidth by prioritizing games for a smoother, faster gaming experience. This works on every device and OS, from PCs to consoles, tablets and more. MU-MIMO technology Work and play online simultaneously. Use multiple devices at the same time, without worrying about slowdown or interference. ASUS AiCloud Service Keep track of photos, videos, documents and more. You’ll be able to access, stream, sync and share the same files on multiple devices. ASUS AiRadar Get clearer coverage. Wi-Fi signals will beam directly to your devices, for an intelligently strengthened connection. QoS (Quality of Service) Optimize your network. Select bandwidth for different tasks, like streaming videos, gaming online, or video conferencing. 4 external antennas Expand your home network’s range. Antennas improve Wi-Fi range and signal stability, even throughout a very large home. Built-in Ethernet and USB connections Connect multiple wired devices with 4 Gigabit LAN ports, 1 Gigabit WAN port, and 2 USB ports. AiProtection Keep your network secure with 64- and 128-bit WEP, WPA/WPA2-PSK, WPA/WPA2-Enterprise. Plus, you can manage parental controls, guest networks and more for your peace of mind. ASUS router app and interface Manage network traffic, diagnose connection issues and update firmware, all from your tablet or smartphone. Plus, the ASUSWRT dashboard UI lets you easily setup, monitor, and control your connection.