This is the Sega White Star Power I/O Driver Board from my SW Trilogy Pin. I know that it was used in plenty of other Sega games in that era.
It is tested and works. I sent this board off to Clive because the previous owner had done a few poor repairs around Q5. I have those repairs pictured here.
Asking $175 shipped USPS OBO
I trust Clive's work, or I'd keep it but I ended up in a new board set while I was waiting on these to be repaired.
My kids were impatient