Allows you to connect up to ten USB devices to a single USB port on your computer. Features two swivel ports, for easy connection of MP3, flash drive and similar devices. This unit meets or exceeds USB 2.0 specifications for high-speed data transmission rates up to 480Mbps. Perfect for both the mobile and desktop user. While the hub will function perfectly in virtually all cases without needing external power, a multi-voltage AC adapter (100-240V) is included in the event you are connecting power hungry devices. The U222-010-R is backwards compatible so that it will function with both USB 2.0 and USB 1.1 devices. Over-current protection safeguards connected equipment from overvoltages. Includes a hub to computer USB cable - 3 ft USB "A" male to five-pin mini-B male. Plug-and-play/hot-swappable allows you to add or remove a device at any time.