Certified refurbished by ARRIS DOCSIS 3.1 cable Modem in the SURFboard lineup. The SURFboard SB8200 is a DOCSIS 3.1 modem – The newest technology being offered by cable Providers. With 32 download and 8 upload channels, it's the perfect modem for things like 4K Ultra-HD video streaming and virtual reality gaming! Plus, it has 2 Gigabit Ethernet ports which means you can create 2 separate home networks from 1 modem. Don't have DOCSIS 3.1 in your area yet? That's OK, the SB8200 is backwards compatible so it will work in DOCSIS 3.0 mode as well. Today's connected home demands speeds far more powerful than ever. Make a wise investment and Future-Proof your home network with the SURFboard SB8200 and get the fastest speeds and most reliable connection to the Internet. Own yours today and stop paying rental fees.