Quoted from MeNaCeFiRe:
What does the mod do?
It an extension to the USB update port on the back box CPU board to the front of the game cabinet. With this installed you dont need to remove the glass to do a code update. A brilliant idea and well made mod for a very reasonable price. I got a chance to talk with him expo and he's a great kid. I wish I was as smart as Robert when I was his age. I hope he sells a ton of them.