Zoom 5341HR Cable Modem, Factory Refurbished with two year warranty 172 Mbps cable modem provides very fast Internet over cable by connecting modems 10-100-1000 Ethernet port to your computer or router. Owning this cable modem eliminates modem rental charges (typically $7 to $10 every month) from Comcast XFINITY, Cox, Bright House, Cable One and other service providers. Not recommended for use with Time Warner Cable. The very fast Gigabit Ethernet port connects to your Windows or Macintosh computer, router, wireless access point, HomePlug adapter, or other Ethernet-enabled device and delivers 10/100/1000 Mbps Ethernet port speeds. Works with Windows, Macintosh, and other Ethernet-capable computers and can also be used with wired and wireless routers. These units are factory refurbished and are protected by a two year warranty from Zoom Telephonics, a leading manufacturer of data communication products for over thirty years. Two years is a longer warranty than the warranty on new cable modems from other manufacturers.