It never worked on my Microsoft multimedia keyboard. The multimedia buttons don't interest me, it didn't work in general. But I won't bother because of the very low cost. I knew in advance that the chances of it working were 50%. The same thing happens with other similar adapters. Maybe it works on non-Microsoft keyboards, but I don't have any available PS/2 keyboards to try it out. Maybe some other adapters with cables that I saw on skroutz work better.