You will need to take photos of the back of the main board and see where the plug is patched in. Who knows, there might even be a board squeezed in under the main board. We can't possibly guess what that thing might do unless we get some detail on it.
Mike
On Monday, June 2, 2014 9:34 AM, "justmull@... [korgpolyex]" <korgpolyex@yahoogroups.com> wrote:
Photos uploaded to the photostream - couldn't seem to attach