These are three different button mechanisms.
-The Kailh-Blue is very tactile, easy to press and clicks rather loudly.
-The Kailh-Brown is also tactile, but does not click as loudly.
-The Kailh-Red, unlike the other two, moves linearly.
Enclosed I send you an article where you can see three mechanisms. Maybe this will help you.
https://www.keyboardco.com/blog...
Hello Bangertnoa, the manufacturer's website (https://de.sharkoon.com/product...) only mentions Windows 7/8/10. But of course it can still work (with restrictions). I would still advise you to use a different keyboard.