*Usb hub with 3 ports+ micro SD card reader
*High speed 3 port USB HUB with Micro SD card reader
*Maximal input & output is 500mA
*With BC 1.2 smart charging function
*Compatible with all Windows/ Mac/Linux system
*Downward compatible USB 2.0/1.1, Support all USB device
*Current overload detection and protection for each USB port