Connect a micro sd card to your computer or otg mobile device through a usb or micro usb port the msdreadu2otg micro sd to usbmicro usb adapter lets you turn a micro sd card into an external usb storage solution that can interface with any usb enabled computer or otg enabled device such as samsung galaxy smartphones and tablets expand the storage capabilities of your otg enabled smartphone or tablet by creating an external storage device that you can also connect to your usb enabled com