Do you have a link to the auction?
Do AES and MVS have the same controler plugs?
Yes. And if you don't have onboard MVS controller ports you can easily wire up some to match a new and old style stick (db15).
I do have a couple onboard ports on my board. Does having a pad/stick plugged in disable the control panel, or do you essentially have 2 sets on sticks and buttons controlling 1 player?
