Ensoniq KPC circuit board. This board mounts onto the keybed chassis. Note: The firmware on the KPC board needs to be compatible with the firmware on your main board. So if you replace the KPC board, you may need to swap over the EPROM chip from your old KPC board. The EPROM chip is the socketed IC with a paper label.

Was a working machine machine many years ago before being stored in the attic.

I have tested the keyboard recently and the machine powered up and the display light up, but lack of floppy disk ment that I couldn't  test all of the machine's functions. So selling as spares or repair.