ITEM NAME:Mini TF/SD Card Reader with USB/Micro USB Port OTG Function for Smart Phone A#S Product Description Description: Features: Mini size, lightweight and portable. Plug and play, requires no external power. Up to 480Mbps data speed. Work Voltage: USB port.OTG function supported, suitable for most Android smart phones with micro USB port. With TF and SD card slot. Included:1 X Card Reader. Mini size, lightweight and portable. Supports max 32Gb card capacity.