ARRIS SURFboard SB8200 DOCSIS 3.1 Gigabit Cable Modem, Approved for Cox, Xfinity, Spectrum & others. Brand new and factory sealed. The item "ARRIS SURFboard SB8200 DOCSIS 3.1 Gigabit Cable Modem for Cox Xfinit Spectrum" is in sale since Tuesday, November 12, 2019. This item is in the category "Computers/Tablets & Networking\Home Networking & Connectivity\Modems". The seller is "shortstopllc" and is located in United States, Multiple Locations.