I have a Thermaltake Tsunami Case with 2 120mm fans and a 90mm fan. The mobo I'm using is the MSI K8N Neo2 Platinum. I connected the 4 pin connectors to my PSU and used it to power the fans, however there is this 1 yellow wire with a small 3 pin connector coming from the 2 120mm fans. I connected them to the mobo, but they don't seem to be doing anything, I can't seem to control the fans with the mobo. I noticed that although it is a 3 pin connector, there is only 1 wire going to it. What does this do? and is there anyway to control my fan speeds?