With iPad and a computer, you can transfer files using an external storage device, a file server, or a cloud storage service like iCloud, Box, or Dropbox.
Connect your iPad or computer to an external storage device, such as a USB drive or SD card.
To connect to iPad, you might need a cable adapter. See Set up file sharing on Mac in the Mac User Guide.
Note: Subscription fees might apply.
On your iPad or computer, follow the instructions from your cloud storage service to upload the files you want to share.
To access your shared files on iPad, go to the Files app Modify files and folders in Files on iPad