Suggested Retail:$140. NETGEAR Cable Modem CM1000 - Compatible with All Cable Providers Including Xfinity by Comcast, Spectrum, Cox | for Cable Plans Up to 1 Gigabit | DOCSIS 3.1, Black (CM1000-1AZNAS), 8.8 x 5.4 x 5.9 inches. The Netgear CM1000-1AZNAS ultra-high speed Cable Modem provides a connection to high-speed cable Internet with speeds up to 6 Gbps. It is the industry's first DOCSIS 3.1 cablelabs Certified cable modem, 10x faster than DOCSIS 3.0. Working with both DOCSIS 3.0 and DOCSIS 3.1 cable Internet service providers, it is the ultra-high speed Cable Modem ready for today's service plans and future upgrades. Enjoy Ultra HD video streaming over IP with 2x2 OFDM or 32x8 channel bonding giving you faster download speeds—even during peak hours. Save up to 120 a year by eliminating Internet service provider rental fees. Ideal for an Internet service plan 300Mbps and above. Certified with Comcast XFINITY, Cox and Mediacom. Please check your cable Internet service provider website for data speed tier compatibility and to ensure it provides DOCSIS 3.1 service, otherwise this modem will only work as a DOCSIS 3.0 modem - Microsoft Windows 7, 8, 10, Vista, XP, 2000, Mac OS, or other operating systems running a TCP/IP network - Microsoft Internet Explorer 5.0, Firefox 2.0Safari 1.4, or Google Chrome 11.0 browsers or higher. Fast web based self - activation for XFINITY customers to get you connected without a service call.. 7 DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.