4-port mini USB 2.0 hub. This allows you to connect up to four USB 2.0 devices to one USB 2.0 port on a pc/mac/laptop. This product comes with a 110/220 volt ac adapter for easy use anywhere. All USB 2.0 devices are backwards compatible to USB 1.1 standards. The compact size of this product allows you to travel with the product. This product is beneficial to laptop environments due to it's small form factor.