I just bought a UD-3900PDZ. The USB, Network and DisplayLink works fine. But when I connect my headphone, there is no audio. It is not a big issue, because I can connect it directly to my macbook m1, but I wonder if it is because my headphones does not have microphone or is it some other soft/firmware issue.
I did follow the recommendation in the knowledge base, to go on audio settings, select as output and make sure is not muted or low volume.
Is there something I am missing?