The EVOLUTION EVO-UH34 is a 4-Port USB 3.0 Hub that provides the user to expand one USB port in desktop, notebook or tablet to four super-speed ports to connect additional USB devices such as MP3 players, digital cameras, flash drives, a mouse, keyboard, printers, scanners, smartphones and other USB peripherals. SMART DESIGN:- 4 USB 3.0 A-type ports with up to 5Gbit/s data transfer to allow you the enjoyment of having multiple USB devices at super-speed rates. - Backwards compatible with USB 2.0 and USB 1.1 making it very versatile and flexible. - Plug and play, no drivers needed. - With LED power indicator and built-in 1 ft. cable. - Slim sized and lightweight to take it with you wherever you are. SYSTEM REQUIREMENTS: - Windows 98/ME/NT/2000/XP/Vista/7/8 - Mac OS - Linux PACKAGE CONTENTS:- USB 3.0 4-port hub with built-in 1 ft. cable and LED power indicator WARRANTY: This product comes with 18 months manufacturer's warranty. PLEASE NOTE: - This device is bus-powered, connected devices must not exceed the current rating of the host port. - May not work with portable hard drives and other USB powered office equipment (devices that draws power from computer). - Supports iPad syncing only (not for charging).