The Targus 4-Port Mobile USB Hub is convenient for those who travel with their laptops and would like to connect to their peripherals via a USB port Expand one USB port to four high-speed ports to connect and charge your iPodMP3 player Smartphone or peripherals through the laptop The USB cable never gets lost and stores inside of the hub for easy travel Both compact and sleek the Targus hub is portable and easy-to-use; simply plug and playFeaturesFunctionality - 4-Port USB hub enables instant connectivity with up to 4 USB devices to your laptopPractical - Attached cable wraps around ports to protect from damage and dust when not in use Easy one-touch reset button restores device connections if lostPowered - AC adapter provides additional power when requiredCompatibility - PCMac CompatibleColourBlack and GreyCompatibilityWindows 7 2000 XP Windows Vista Mac OS X 102 or later USB PortDimensions99 x 41 x 16 cmWeight00407g (not inc AC adapter)0227g (inc AC adapter)