Is it possible with an adapter?
Isn't there supposedly some problem with the PS3 that doesn't let gamers use adapters to use other controllers? I've read that somewhere and I know that Dark Geese has said he has had to use a PS3 pad to play KOf13 cause he can't use his normal PS2 controller.
You can use adapters so long as it has a home button. I can verify that the inPin Ps2>PS3 works flawlessly.