I cannot access USB drive on OTG (without dock keyboard). USB drive file system is exFAT and NTFS format, by using the Total commander with an option (costly) add-on, exFAT and NTFS file system can be read and write.
But using my handphone (using Android 9.0, Android 10 and Android 11) can access this USB drive without any other software, why Chuwi SurPad 10.1 (Android 10) needed the additional software and very costly?