TBH I don't know. I don't have a PS2 (though 2 of my Brothers own that and the PS3).
I just used google to find the links for the parts I thought you might need.
I'd venture to guess (based on how Sony has worked the Playstation series) is that for connection purposes, there's not going to be a difference.
Your best bet is to contact someone at Sony or go to a used gamer store and ask a clerk. You'll likely get a perfectly good part at a perfectly good (i.e. cheap) price.