Yes, that's the one! Totally worth it IMO. It's a simple flash, as long as your iPac is a post-2015 model you won't have any issues. If you end up not liking the X-input feature no harm no foul. I would say save a copy of your config in case, but it shouldn't mess with anything. Yes, I have 2 gamepads when switched to X-input mode. I just got done setting up 2 player Ultimate Marvel vs. Capcom 3 and Injustice: Gods Among Us PC versions with ease.