You'll need to switch your harness to a G harness and then purchase either a JVS IO or a fast io. A popular choice is to use a Sega JVS io and use a a converter board, they have better compatibility and easier to get. I'd suggest contacting @Lemony Vengeance for a harness, he also makes a harness for brooks boards.
Thats not JVS, it's USBIO that's used on X4s for their most modern games. It has very little compatibility but the good thing is you can swap a JVS IO in pretty easily.