Conforms to the USB 2.0 specification, this hub is backward compatible with the USB 1.1 / 1.0 standard specification, which uses the second-generation USB Hub controller. And it does not require a driver, plug-and-play and all use first-class high-qualitSupport computer USB2.0 and Micro USB interface mobile phone with OTG function and tablet external 4USB interface OTG connector, such hub is suitable for mobile phone models are for / Huawei / Sony / Meizu / Samsung Galaxy S3 / S4 / NOTE 2/3, etc.For plug-and-play and hot swap functions, various high-speed (480 / 12Mbps) and low-speed (1.5Mbps) USB peripheral products can be connected.USB2.0 interface uses 5 volt-voltage, 4 USB ports, each power supply up to 500 mA, no external power supply is required when normally connected to devices below 500 mA, such as when using a large-capacity mobile hard disk when the power supply is insuffi