otg card reader for direct data exchange between memory cards and pcs notebooks smartphones and tablet pcs compact otg card reader for all standard sd cards like sdsdhcsdxc and microsdmicrosdhcmicrosdxc universally usable thanks to the usb plug type a and usb micro plug type b combination usb plug type a for pcs and notebooks usb micro plug type b for smartphones and tablet pcs especially suited for hostotg compatible smartphones and tablet pcs thanks to the usb micro