10 ports small and beautiful easy to carry each power supply can reach 500MA 10 high-speed USB 2.0 ports can be used at the same time up to 480Mbps and backward compatible with USB 1.1 / 1.0 standard specificationsCurrent protection function support overload voltage and instantaneous current protection function safe and convenient to useWith power supply can drive high-power USB devices with working indicatorWorking humidity: 10% - 90%;
Working voltage: 5V;
Working current: 500mA;
Working temperature: -20 - 75;
Storage temperature: -40 - 85XP/Vista or Mac OS 8.1 or above (drivers are required under Windows 95/98)