I really need some help. Have Chuwi dual OS V10HD 3G 10.1″. Only has a single micro USB OTG port. OTG worked fine under Windows 8.1 until a week ago. All of a sudden the only thing the port would do is charge the tablet. Can no longer recognize USB flash drives or SD card adapters. At first I thought that maybe updating to Windows 10 might fix this. Did problem free upgrade to Win 10 yesterday. Still same problem. The micro USB port only works for charging.
There is a OTG option in BIOS. Search for it and see if it is enabled or not. To enter bios you need a usb keyboard of the keyboard attached to the pogo port.
press ESC when you see the logo and select SCU from the menu.