This attractive extension cable / hub lets you connect your USB 2.0 devices over a distance of up to 10 metres. It's ideal for printers, keyboards, mice, and other USB 2.0 devices that require a longer connection. Should you need additional power you can connect up an optional 5 V power supply of USB cable. Highlights: Extend your USB 2.0 devices by up to 10 metres Connect four USB 2.0 devices at once and use them over large distances. Should you need additional power you can connect up an optional power supply of USB cable.