Most of the aftermarket fans you can buy will have the three or four pin connectors. One with a three pin (mobo) connector would probably work but you might have to rearrange the fan leads in the connector (which is easy) to match the PS connector. You could also just cut the connector off of the old fan with an inch or so of wire and solder or wire-nut the leads together.In either case, no big whoop...
.bh.