*Fully support USB 2.0 High-speed transfer rate up to 480Mbps,downwards compatible with USB 1.1 *Fully support USB1.1 Full-speed transfer rate up to 12Mbps,upwards compatible with USB2.0 *LED indicator for data access. *Hot plug&play installation. *OS support:Windows98/ME/2000/XP,Mac9.x or above,Linux2.42 or above.