Kingston?s DataTraveler microDuo Flash drives provide additional storage in a small, convenient form factor for tablets and smartphones that support the USB OTG (On-The-Go) functionality. The USB OTG standard allows mobile devices to directly connect to supported USB devices. DataTraveler microDuo Flash drives allow microUSB ports, often used for charging devices, to be used as expansion ports for up to 128GB of additional storage. Ideal for storing large files while traveling, DTDUO3G2 gives plug-and-play functionality to Android tablets and smartphones without microSD ports at a lower price per GB than the extra built-in storage on a mobile device.?