ARRIS S33 Surfboard DOCSIS 3.1 modem via cavo multi-gigabit
DOCSIS 3.1. The S33 has one 1-Gigabit Ethernet port. Compatibility The SURFboard S33 is compatible with major U.S. cable internet providers including Cox (Gigablast), Spectrum (Internet Gig), Xfinity (Blast! ).