Open Labs Mix Edit Panel. Super rare and vital if you want to do upgrades and mods since the you need it for keybed MIDI to pass through. This is my last one NOS, I may have one refurb version after this but idk yet Ill need to harvest some parts. But this one is perfect new old stock that I was saving for my personal Miko if I got in a bind but never needed it. Ill throw in some screws and the USB cables. I dont have any of the MIDI in cables, youll need to use the existing one you have in your machine or make one.