The SURFboard SB8163 DOCSIS 3.0 Cable Modem features 16 downstream x 4 upstream channels for high-speed internet access. It is compatible with major US Cable Internet providers and is best for cable internet speed plans up to 400 Mbps.
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I am was not familiar with modems but purchased the Motorola Arris SURFboard 600 series DOCSIS 3.0 Cable Modem to replace the modem I was renting from Time Warner Cable. It works great! Have been using it for 1 month and works like a charm. Returned my old modem to Time Warner Cable and now save $8.00 per month.