product: premium 4-port usb hub for notebooks * control: high-performance usb 2.0: transfer large files faster at speeds up to 480 mbps * convenience, smart indicator lights: check connections at a glance with individual port connection lights * increase user's possibilities with a compact 4-port usb hub that fits their mobile lifestyle * extra ports add instant connectivity for up to 4 devices inc thumb drives, cameras, and mp3 music players system requirements: pc: windows 2000, windows xp, windows vista ; usb port mac: mac os x (10.1 or later) ; usb port package contents: logitech premium 4-port usb hub for notebooks, usb cable, quick start guide