CM400 High Speed Cable Modem provides a connection to high-speed cable Internet with speeds up to 340Mbps. It is CableLabs certified and with DOCSIS 3.0 is 8X faster than 2.0. A Gigabit Ethernet port provides faster access and downloads</br>CableLabs Certified for U.S. Cable Internet Services-DOCSIS 3.0 is 8 times faster than DOCSIS 2.0</br>Works with Cable Internet Providers like XFINIITY?? Time Warner Cable?? Cox??