I bought a motherboard for my i5 3570 and it was a dell optiplex board. All it has are 5 pin fan ports and I only have the intel push pin 4 pin fan coolers. Ideally I just want an adapter or even fan port that has that 5 pin port on the end. Does anyone know of such a thing? I cannot find a single adapter that's 4-5. Everything I've looked at is all 5-4. Thanks.