I copied the files to USB Type C and back to my iPad Pro 11 - IOS 14 Also play music straight from the USB stick as shown in the video. You must have and use "Apple Files App" (blue folder icon in Manila) to access the drive. It will appear on the screen as "Untitled". I haven't figured out how to edit the device name yet. I also successfully tried the same thing on my Samsung S20. Didn't give the item 5 stars due to the complete lack of instructions for use with the iPad/iPhone. All in all I recommend it. This is much easier than using adapter cables and/or hubs.
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