Good meowning :)
I recently purchased a CAC-1080 for the purposes of getting 4k60 going on my gaming rig. Unfortunately, while I get the proper video, I get zero audio. For some reason when present this adapter prevents the computer and prepro from seeing any audio sources, thus no audio.
Unfortunately there is no readily available link to download firmware and/or instructions on how to check and update said firmware on the main site (why is it hidden behind an email-only distribution method?). For the price one pays for these adapters one would expect audio to work without problems when both the source and destination are HDCP 2.2 compliant.