Long time since I used this sound card and I forgot which OS I need on a mid 2012 MacBook Pro 13" also the last supported version of Traktor Pro 3 if anyone knows would be great!
For compatibility, once again, go HERE and open the sections for hardware (specifically about the Mk1 series) and software.
Look HERE.
Edit: Post a picture of your soundcard. There are three different models, so we can help you identify which one you have. Or make a picture search at your favourite search-engine.
Here is the soundcard in question
Seems like Mojave / TP 3.5.3 or Catalina / TP 3.5.3 with workaround am I correct?
The serial is not found :( Have I MK1 or MK2 ?
You have Mk1:
This is Mk2:
Looks like 10.11 then….. dedicated old MacBook for this ;)
So conclusion, Audio 2 MK1 can only run with OS 10.11 but with what version of Traktor?
Is there no workaround to make it run on a later OS such as Mojave or Catalina?