Forums >Technical Support>Can't figure out how to upload from 305
an amazing likeness
For a Forerunner 305, which is USB, you're looking for the Garmin Communicator:
Windows version is here: Link to Garmin site for Windows
Mac version is here: Link to Garmin site for Mac version
Acceptable at a dance, invaluable in a shipwreck.
After you get that installed, Garmin has a test page that will tell you if your Garmin Communicator is working:
Test page