This is from KUL website:
"Our mission is to challenge the norms of the computer peripheral market, which too often tends towards corner-cutting and exaggerated hype, by offering products with
uncomparable design, unique functionality, and the highest reliability. We confidently seek to accomplish this by leveraging extensive manufacturing and engineering experience and by being honest with ourselves and our customers...the rest is what we'll just call science!" [emphasis added] ~
http://keyeduplabs.com/about.htmlI guess that lone black mx switch is part of the "uncomparable design" and "unique functionality", lol. Surely it has nothing to do with "corner-cutting", or piss-poor manufacturing. Maybe it was a "science" experiment?