The Port Settings page of the web-based utility of the switch displays the current Green Ethernet and EEE modes per port, and allows the configuration of Green Ethernet settings on a port. This mode is only supported on RJ45 GE ports and does not apply to Combo ports. If the cable is shorter than 30 meters for Ten-Gigabit ports and 50 meters for other type of ports, the device uses less power to send frames over the cable, thus saving energy. After cable length is analyzed, the power usage is adjusted for various cable lengths.