High speed data transfer to iPad Pro or Ipad Air 4
I am thinking about getting an iPadPro or iPad Air 4 to do post production on raw images from my DSLR when I am away from home for a few days. I already do this on an ancient iPad Air 2 but it takes an age to transfer 60MB RAW files from the camera to the iPad. My Nikon D850 supports USB 3 and one might hope that Apple does as well in its latest devices.
What are the options for high speed transfer of data from external devices? Does the iPadPro support USB 3 through its USB-C connector? I can't see any definitive answer to that on the web. If not, are there other high speed options I could use with a USB external device, with an appropriate converter/cable?
Any assistance appreciated.