I recently bought a second hand Korg NS5R, and was interested to find that it could originally be dealer-upgraded using a Yamaha DB51XG card (making it equivalent to an NX5R). Coincidentally, I have an old DB50XG card, which I believe is almost identical to the DB51XG.
Does anyone know whether the DB50XG would work in the NS5R?
I've been unable to find any documentation on fitting option boards (presumably because it was a dealer-fitted option). Before I remove the rather large number of screws in the case, any guidance would be appreciated.