I am in the process of upgrading my comp, and want to run a intake and exhuast fans. My problem is that my out of date mother board only has one 3 prong plug for a cooling fan, could I splice the other fan into the exsiting wires of the stock cooling fan or could I buy an adaptor for the 4 prong from my hardrive/power supply to a 3 prong that fits the fan. Mind you that my other fan that I wanna use is a 120mm fan (this would be my intake fan and I would have to cut a hole in my case). Help would be nice.