Well I can't say for sure, but I'll tell you what I know:
My driving force is USB only. You plug the wheel into a power outlet for power (obviously), plug the pedals into the wheel assembly, and plug the USB port to the front USB port of the Playstation 2. You can also pop the USB plug into a PC and run it as a PC wheel. I'm going to say there's an excellent chance that this is the same setup for the Pro.
If you just NEED the playstation plug, they do make them. I have a slightly older MadCatz wheel that uses the regular PSX plug, and no power plug. You could probably scout one at a local gamestop or ebay. Or in my thread in B/S/T since I'm selling my old one

Ok, sorry for that shameless plug, but hope that helps.