1. Provide 7 USB ports, 2.USB3.0 HUB 3. Built-in current overload short circuit protection device; 4. Adopt excellent electronic devices to ensure stable operation; 5. The computer automatically recognizes and installs, no need for drivers, plug and play, plug and unplug; 6. Support: windows95/98/ME/2000/XP/Vista, Mac 8.6 or later