I have an HP Pavilion p6214y desktop. I wanted to upgrade the power supply, and purchased a Corsair CX600 because I saw so many recommendations for this brand, it got great reviews. It said it was compatible with most ATX motherboards; however, when I got it I noticed that my CPU power plug is 4 pin and the power supply is an 8 pin. Can you all recommend one that is very similar, but is compatible with my computer?