Micro USB is a portable version of the USB 2.0 standard, which is smaller than the Mini USB used by some mobile phones Micro USB is the next generation of Mini USB, which was formulated by the USB Standardization Organization (USB-IF) on January 4, 2007 Micro USB support OTG, it same as Mini USB, it is 5pin too The definition of Micro series includes Micro B series sockets used by standard equipment, Micro AB sockets used by OTG equipment, Micro A and Micro B plugs and cables