The active 10-meter USB 3.0 extension cable from Tripp Lite is a bus-powered extension cable that allows you to extend a device cable without experiencing signal loss or potential power issues. Extend the distance to 20 meters by connecting two U330-10M cables together. USB limits the cable length to 4.88 meters. Any length over 4.88 meters requires the use of an active cable like this one. This cable has a built-in signal amplifier. The cable must be connected directly to a USB port (either on the PC or a hub). Use a standard USB 3.0 A-B cable that is 1.83 m, 3.05 m, or 4.57 m long to achieve the desired distance. The U330-10M provides the connected device with power up to 120 mA. If your device requires more than 120 mA, an external power supply will be needed. The U330-10M accepts a 5 V, 2 A power supply with a 3.5 x 1.35 mm DC jack. The output plug on the power supply should have a positive tip and a negative sleeve.