Extend the distance between a computer and a usb 30 device by an additional 10 metersr r extends a usb 30 device connection by an additional 10m 33ft or cascade up to 2 levels for 20m 65ftr powered directly from the usb port or through the included universal external power adapterr backed by a startechcom 2 year warranty and free lifetime technical supportr r extend the distance between a computer and a usb 30 device by an additional 10 meters the usb3aaext10m 10 meter active usb 30