On Macbook Pro, F5 and F6 seems to be the "keyboard illumination keys". However, the keyboard's illumination doesn't seem to change at all after pressing those keys. Also, I noticed a small "no ...
I recently sent my Macbook Pro (late 2008 model) to get a replaced logic board and top cover. When I got it back the Special function keys are mixed up. F3 - mutes sound - it should do expose f4 - ...