Astrotek USB A Female to Micro USB 5 Pin Male Adapter Host OTG Data Charger Cable Black The ASTROTEK USB Micro-B to USB OTG Cable is the perfect solution for expanding the capabilities of an OTG enabled tablet, smartphone or other mobile device by directly connecting a USB device such as a USB flash drive for additional storage or a USB keyboard and mouse for additional control. Connect a USB hub to this adapter to further expand the capabilities of the mobile device by connecting multiple USB devices. • USB - A Female, • Micro-B Male • OTG Function