USB2.0 Specification compliant,backward compatible with USB1.1 and data transfer rate up to 480Mbps External power supply,plug and play installation. Supports PC Win95/98/Me/2000/XP/VISTA,Linux2.4andMac os8.5 or higher( Windows 95/98 required instal drives). Light weight and extra easy portability. AC Input: 100 – 240V,DC Output: +5V / +12V, 500mA.