Q:The flash drive (USB flash drive) cannot be read.
A:1. The tablet supports FAT32 external storage. If the inserted flash drive's format is incompatible, pull down the status bar, click "sd," and you will be prompted to format it. After formatting, it will be usable.
2. Check if the OTG cable connecting the USB drive is working properly. You can try a different USB drive or test it with a mouse.