Can I upload my bank register to my Quickbooks from a flash drive. How do i do this?

Which file format do you need to import? *.qbo, *.pdf, *.csv or else?

It looks like this is a duplicate post, @Hartmann.

My colleague MaryLandT already shared her answer about your concern regarding importing your bank register. You can check her response through this link: https://quickbooks.intuit.com/learn-support/en-us/do-more-with-quickbooks/re-how-do-i-upload-my-bank-register-from-a-flash-drive-to-my/01/1018189#M12248

Just in case you need more information about importing data in QuickBooks Online, you can read through this article for more guidance: Common questions about importing data to QuickBooks Online.

The QuickBooks Community team is always here to help if you have any other concerns or follow-up questions. Have a good one.