I'm using a Dell DW15 docking station with a mac High Sierra and wanted to ask how can I set up the audio output so that when I plug in the audio jack in to the docking station the audio output would go to the device connected to the docking station and when it's unplugged the audio output would go to the mac's built in speakers?
Currently it outputs the audio through the speakers in both scenario's.
If I go to System Preferences -> Sound -> Output and then choose the docking stations USB output it only outputs audio to the docking station, meaning that there is no sound when the audio jack is unplugged from the docking station.