Product details:

SURFboard SBG6580. It is an affordable, complete solution for your home network. And with built-in security features, you can enjoy a safe and secure Internet connection never have to worry. When it functions as a DOCSIS 3.0 cable modem, the SURFboard SBG6580 is compatible with major U.S. cable internet providers, like Xfinity by Comcast, Time Warner, Cox, Brighthouse and many others.A new and improved version of the world's most widely deployed DOCSIS cable modems
For the residential cable subscriber who wants a powerful modem capable of delivering a high-speed data service at blazing fast speeds
This Arris SurfBoard 570763-033-RB Referbished Modem delivers your complete personal media experience, at lightning-fast broadband speed