Lindy Pro Extension Hub USB 2.0 - 8m, expandable up to 56m, 3x female USB type A (for USB devices with 100mA power requirement), compatible with USB 1.1 (supports 480/12/1/5Mbit/s), plug & play, includes power supply. Supported operating systems: Win ME/2000/XP/Vista/7, Mac OS9/OSX, Linux.