Transfer files from internal storage to TF/SD card (Garmin Edge Touring)

After a recent multi-day ride across Scotland, my veteran Garmin Edge Touring has failed to connect to my computer. It will still charge from being plugged in, but creates the error prompt 'USB device not recognised'. I have tried all sorts, including changing cable, reupdating my computer, updating Garmin Express, etc. Nothing works.

I assess that this is due to damage to the USB port. Is there a way I can transfer the multiple activity files on the device's internal storage to the TF/SD card whilst on the device, without having to plug the device into the computer? If so I can extract the card and upload the files to my computer directly.

It'd be a real shame to lose all of the data from my expedition, so any help much appreciated!