Decklink Studio 4K no analog audio

Hi all,
I have a client that has a Dell Precision 3650 with this Decklink Studio 4K.
The SDI output works fine (both audio and video) with any standard format.
HD SDI from the breakout cable also works fine (both audio and video).
AES output from the breakout cable works fine on all channels.
But somehow, the analog audio output from the breakout cable doesn't work, for none of the 4 channels.
No matter what I use as a source (Premiere, Media Express, PC audio).
I have updated Desktop Video to the latest version.
I have completely uninstalled Desktop Video, removed the card and reinstalled Desktop Video, but same issue.
Played with different settings in Desktop Video.
I didn't try older versions of Desktop Video.
Could it be a compatibility issue?
Any other idea?
Thanks!
I have a client that has a Dell Precision 3650 with this Decklink Studio 4K.
The SDI output works fine (both audio and video) with any standard format.
HD SDI from the breakout cable also works fine (both audio and video).
AES output from the breakout cable works fine on all channels.
But somehow, the analog audio output from the breakout cable doesn't work, for none of the 4 channels.
No matter what I use as a source (Premiere, Media Express, PC audio).
I have updated Desktop Video to the latest version.
I have completely uninstalled Desktop Video, removed the card and reinstalled Desktop Video, but same issue.
Played with different settings in Desktop Video.
I didn't try older versions of Desktop Video.
Could it be a compatibility issue?
Any other idea?
Thanks!