Chuwi Surpad 10.1

Can this Chuwi Surpad 10.1 uses OTG while using the dock keyboard? I had tried, it don’t work.

Using OTG (without keyboard), it cannot read/write to USB (using NTFS format and >128Gb capacity). Try FAT32 (formated by the Surpad), only able to read if using <128Gb.