I'm not sure I understand what you mean by "full model number".
something like GBN-K8100 or N14180 or R33006. I don't have the manual atm, only the keyboard.
Lol, I feel stupid.
Hope you can help in some way. I can't play Frets On Fire on this keyboard without muting the sound all the time! XD
Btw, I've tried keyboard remap programs that works via the registry, like "keytweak" which recognized the keystroke (the mute button) but I was unable to disable/remap it.
Hardware modification, that sounds scary, but I'm open to it I guess! :-]