hello im new in this for sorry if i put my question in the wrong place. i have a mapan DX913 (chinese tablet) CPU: Allwinner Cortex A8 1.2GHz . OS: Android 4.0 . RAM: DDRIII 512M . NND Flash : 8.0GB he left a few days to detect the usb, someone had the same problem or know what might be. i use USB OTG checker and i says my tablet not support USB OTG. how this possible if i used usb pen a week ago???