Recently I received a set of motherboard, CPU, memory and cooler to upgrade my PC. But the cooler has only 3 pin connector and does not slow down spinning rate. The motherboard has 4 pin connectors. So I decided to make some adapter. It works pretty well with my Huanan x79 board. I turned on smartfan feature in BIOS and slightly tuned it. So now the fan has about 500 rpm in idle state and 1500 rpm when CPU is fully loaded.
Enjoy this project?