I'm having the same issues and then when I plugged my backup Apple Passport to retrieve my photos, Dropbox started to back it up and then it added it to my Mac and I ran out of memory on a terabit - ugh....
Hey @READINGDESIGN, thanks for reaching out to our Community.
It sounds like this has to do with our backup feature.
Would you mind clarifying if you're talking about a 'My Passport' external drive?
If that's the case and you enabled external drive backup for it, you can follow the steps here to disable it.
Let me know if you have any questions.
Hannah, I just had the same issue. I don't want Passport backing up into my Dropbox. I received a notice as to that was what it was doing. I checked automatic backups and listed last back up as of January. Confused> why did I get a notice?
Hi @Terrig, have you tried deleting the backup of the external drive to see if this helps?