The Zoom Model 5345 is a 343 Mbps cable modem certified for money-saving own-your-own cable modem programs by Comcast XFINITY, Time Warner Cable, and other leading cable service providers. Charter Spectrum approved. Owning a certified own-your-own modem eliminates modem rental charges that are typically $8 to $10 dollars per month. The Model 5345 Gigabit (10-100-1000 Mbps) Ethernet port connects to your Windows or Macintosh computer, router, wireless access point, HomePlug adapter, or other Ethernet-enabled device. When used with a router, the high speed Internet service can be shared with multiple devices. The number of channels supported by a cable modem is the primary indicator of a modem’s top speed. This modem is 8×4, which supports eight channels for downloads, and four channels for uploads. Eight channels for data downloads make this modem up to twice as fast as competing modems that support only four channels. Because this 8×4 modem uses the cable network more efficiently, average download speeds can be faster, even for service speeds below the modem’s top speed of 343 Mbps. A Full-Band Capture Digital Tuner lets service providers deliver faster, more reliable Internet. The 5345 is certified by CableLabs to support the latest DOCSIS 3.0 standard plus DOCSIS 2.0 and 1.1 for use with older cable systems. IPv6 and IPv4 are supported for powerful, flexible network addressing. With its easy installation, high speed, compact size, and extensively tested compatibility, the Model 5345 is the perfect choice for almost any cable modem user. The Model 5345 has been tested and certified by CableLabs to work with nearly all U.S. cable services. The Zoom 5345 is covered by a two year warranty and quality technical support by Zoom Telephonics, a Boston based company founded in 1977.