Line-up USB 2.0 distributor supports hot-plug HUB hub USB expansion of one drag four commodity sizes: 13 x 3.5 cm, line length about 55cm commodity material: PP, electronic components commodity packaging: fine paper card packaging commodity weight: 55.3g commodity units: a variety of USB devices are increasing, your computer's USB outlet is not already available. Not enough? Then you need a USB HUB, this well-crafted USB HUB is inexpensive, value-added, exquisite products, practical functions. It's also a small ornament on your desktop. The four-position activity design of this product is more practical. More beautiful. One USB interface is expanded into four, compact, practical and convenient. Each 500 MA power supply adopts a USB HUB controller without driver, plug and play, supports hot plug and play, and has built-in current overload short circuit protection device.