Well I did this mod on my model 2 64 pin. Works with the modchip I got from Gamegizmo.com. The only problem is that I can only play backups for about 2-3 hours before I get a cd read error. I then have to turn the saturn off for about 30 min before it can read backups again. During that 30 min the saturn reads retail discs fine. What the heck is up with that? Oh also a little gripe about Gamegizmo.com...I bought three modchips(buy two get one free) and 2 of the 3 were just dead chips. And they are all really dirty. Like they are pulls from old sega saturn systems and have been used for YEARS. Wierd. I let them know about the dead chips and they told me to send them back for exchange...we'll see how that goes.