Hummm didn't thought on that one. But the Viper system is already jamma.
Looks like a konami classic to Jamma and JVS? I Guess I will have to try it. I wanted o understand it before trying it to ensure that dont break anything.
So let me see if I got it... sorry still learning....
Converts a Konami classic to JVS. But the Jamma pass-through, I didn't understood. what is used for? If it as sticker saying "dont connect to this portion" why is even there?
About the viper you are right. I was confusing with the Viper 2.