4pins

I just bought a Cooler Master ML240L V2 AIO to replace my old stock cooler. The installation went perfectly until I went to plug in the 2 3-pin headers on mu motherboard. My motherboard has 4-pins instead of 3 pin. What do I now? Motherboard: Z87 Plus LGA 1150

i'm building a new pc for me self since i got tired of my gaming laptop :) the build i have which i'm going to list here asking your opinions on, is built not a be a humongous tower yet have the power to play BF4 if i wish. ASRock B85M PRO4 LGA1150 - microATX 65.90 euros Intel Core i5 4570...