This USB hub can be used as both a USB fast charger and a USB port extender. It allows you to connect devices with a male USB interface, like your keyboard, mouse, USB storage devices, etc., to four USB 2.0 female ports, extending one USB 2.0 interface to four USB 2.0 interfaces. Additionally, the Onten USB Smart Hub allows you to fast charge up to four mobile devices at once using a single power source. Fast charging is supported by this 4-port USB 2.0 hub. Each interface security mechanism, circuit protection, overcurrent protection, reverse power protection, and an entire built-in security mechanism for protection against overvoltage, overcurrent, and short-circuit leakage protection module comprise the new standard security protection. Plug and play—no requirement for