The drive LED doesn't go off

[admin]

I am not sure how those jumpers are set (can't tell from the picture). You will want to look at DS0, DS1, and DS2 jumper positions. I just plugged your SuperCard Pro board into my NEC drive and it worked. I will have to find one of my MPF920 drive and try it, but I expect it to work just fine. Your boards passes all of the diagnostics and made a few copies that worked fine.