Features: Compact design, adding pleasure to use.USB 2.0, backwards compatible with USB1.1.4 ports & power up to 500m A each port. No need adapter & no need driver program. Plug play & hot swapping capability. Full data transfer rate up to 480 Mbps. Reserves a power connector for power supply when insufficient output. System support Win 95 OSR2/98SE/ME/2000/XP, Linux 2.4 & MAC OS8.5.