Connect your business's network to the internet with the UCI Multi-Gigabit Rack-Mountable Cable Modem from Ubiquiti. This DOCSIS 3.1/3.0 cable modem supports select plans from Comcast Business, Comcast Xfinity, Charter Spectrum, and Cox. Simply install this cable modem onto your rack with the included kit and connect the coax cable from your service provider to get started. Then link the modem's 2.5 Gb/s RJ45 Ethernet port to your UniFi Cloud Gateway to manage it through the UniFi platform. Please note that the UCI only works with supported US-based internet services, and it cannot be activated outside the US or with an incompatible service. Service Compatibility. Comcast Business (Non-Static IP, up to 1200 Mb/s download & 200 Mb/s upload). Comcast Xfinity (Residential, up to 1200 Mb/s download & 200 Mb/s upload). Charter Spectrum (Residential, up to 1000 Mb/s download & 35 Mb/s upload with limited support for faster speeds). Cox (Residential)