What was plugged into the USB port when this appeared?
Dunno, but I've been using a 64GB drive with no problems. It's a higher-order FAT, not NTFS.One potential issue to watch out for is the size of the USB drive as well as the drive format structure...
Does the owner's manual indicate maximum USB drive size and/or required file format?
Not that I've been able to find.Does the owner's manual indicate maximum USB drive size and/or required file format?