Extension cable features a USB 2.0 Type-A (four pin, 480Mb/s) male end and a USB 2.0 Type-A (four pin, 480Mb/s) female end Total length of 10m (32.8ft.) ensures you have more than enough length to connect your USB devices with no signal loss Link up to four extension cables, to create up to 40m (131ft.) of additional distance Can be powered by your computer’s USB port, or by a wall outlet, using the included universal external power adapter