ZOOM TELEPHONICS DOCSIS 3.0 5341-00-00J 343Mbps Cable Modem Fast Internet! Up to 343 Mbps downstream and 143 Mbps upstream. Fast Ethernet port! 10/100/1000 Mbps Ethernet port connects to your Windows or Macintosh computer, router, wireless access point, HomePlug adapter, or other Ethernet-enabled device. This is MODEM ONLY Supports all popular DOCSIS cable modem standards  3.0, 2.0, and 1.1. Tested and certified by CableLabs to work with nearly all U.S. cable service providers including Comcast, Cox, Time Warner Cable, Brighthouse and Cable ONE. Includes advanced networking capability including IPv4 and IPv6 for powerful, flexible network addressing. Includes energy-saving switching power cube, Ethernet cable, modem stand, and Quick Start flyer. Small, attractive cable modem can lie flat or stand up using the stand provided.