I didn't get a good enough look, but if it's ALPS, you may have some issue removing some of the keycaps. Try to be careful, as you can remove the entire keyswitch by mistake. What I do, is try to hold the keyswitch as best I can, and rock the keycap back and forth, off of it. THis is much more easy with a keypuller than with (say) a few table knives or something.