I have a Samsung Galaxy Tab S 10.5 that I play media files that are larger than 4GB. To do this, I had to format the SD card as exFAT. I also use a USB drive with an OTG adapter to play smaller media files that I don't have to transfer over to the SD. I had this drive formatted as NFTS, but it occurred to me yesterday that I might be able to play the +4GB files if I formatted the USB drive as exFAT as well. I did that, and now the tablet will recognize the USB drive, but not that it has any data on it. Is this because the Android system has an issue recognizing USB drives formatted as exFAT, or is it perhaps because I set the allocation size to the maximum allowable when I went to do the exFAT format?