I know this can be changed per os, but since im printing a custom shell, it is perfect that already works as it should without any configuration needed.
Just in case anyone else sees this and is wondering that the image shows, there are two yellow sleeved wires that basically swap the L and R inputs for the mouse. Notice also that the original circuit board traces have been cut (it’s quite hard to see if you don’t know what you’re looking for. Hopefully someone will confirm or correct me if I got this wrong. Cheers folks.