Product Introduction: Classic design, exquisite shell, hot swappable support, low power consumption. The product is suitable for devices such as USB flash drives, card readers, USB mice, USB keyboards, scanners, digital cameras, USB sound cards, hard drive boxes, etc. It has 7 USB interfaces, each with a power supply of up to 500Ma, and adopts the second generation USB HUB controller, no driver required, plug and play, supports up to 127 USB devices, all using electronic devices to ensure stable product operation. 1. USB2.0 chip, high-speed chip 2. (Hi speed) USB2.0 interface, theoretical speed up to 480Mbps, and Backward compatibility USB 1.1/1.0 standard specification 3. Equipped with four sets of USB connectors with hot swapping function 4. Current protection function, supporting overload voltage and instantaneous current protection function, convenient to use 5. Work indicator light 6. Working humidity: 10% -90% 7. Working voltage: 5V 8. Working current: 500mA 7. Working temperature: -20C -75C 8. Storage temperature: -40C -85C 9. Support system: Windows 95/98/2000/2003/ME/XP/Vista or Mac OS 8.1 or above (driver installation required for Windows 95/98 systems) 10. Color: black