<b>Version: <Kenneth, what is the frequency?></b>
OS: Windows

What steps will reproduce the problem?
(1) Use an audio adapter that creates a single audio input device but multiple output devices. The issue has been reported to occur with Cirrus Logic CS4206B (AB 40)
(2) Try to use an application that uses the renderToAssociatedSink constraint with getUserMedia.

What is the expected output?
Output goes to the headphones output device.

What do you see instead?
Output goes to digital audio (S/PDIF) output device.

See  crbug.com/604523  and https://bugs.chromium.org/p/webrtc/issues/detail?id=5854


It seems that the problem is that all output devices are actually associated with the only input device and the matching code does not always select the match that the user expects.

For now, we have mitigated the problem by making the renderToAssociatedSink constraint false by default.