The perfect solution for CAPCOM VS SNK 2 on Gamecube
I've tested this adapter on my GC using my regular PS2 controller, Capcom Street Fighter 15th Anniversary controller, and ASCIIWARE PSX pro controller on CvS 2 and with the Game Boy Player. All buttons and d-pads work perfectly without any delay, not too sensative and not too dull.
Highly recommended for those who have a Gamecube but prefer PS2 controllers for the d-pad