Tripp Lites 10-port USB 2.0 hub is the most versatile and powerful hub on the market. This USB 2.0 hub allows you to connect up to ten USB devices to a single USB port on a Notebook/PC/MAC. Features two swivel ports, for easy connection of MP3, flash drive and similar devices. This unit meets or exceeds USB 2.0 Specifications for Hi-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 (110/220V ) 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 devices as well as USB 1.1 peripherals. Over-current protection safeguards connected equipment from overvoltages. 1 year limited warranty.