From Carleton Moodle Docs
The Dropbox repository enables users to copy or create a shortcut or alias to files from their own Dropbox. See Working with files for more details.
Using the Dropbox repository
To select a file via Dropbox, editing teachers will click on the Dropbox link in the file picker and log on to access the files in their account. They will see a message requesting access:
When they are done, they can log out.
- Using Dropbox Repository with Moodle blog post by Gavin Henrick
- MDL-52051 - Dropbox API v2 migration