I just completed my first build (pic attached). I have most of my case fans connected to the 3 pin headers on the mobo so I can control the fan with my motherboard. I bought an extra 120 mm antec tri cool fan and after some research I discovered that without some modding I cannot control this fan speed with my motherboard. Any recommendations for a 120mm fan with blue led that can be controlled by my motherboard with the 3 pin header? Thanks!
The other fans that i have connected to the mobo have 3 pin connectors. The mobo does have 4 pin headers but it connects with just 3. I read that the 4th is not a vital pin for newer systems but I didnt really understand why.
The 4th pin is not vital to work, only for pulse width modulation speed control.
If you take a 4 pin fan and wire a 2 pin fan to G and PWM pins, it will run at reduced speen of the 4 pin fan but there is no #3 wire to tell MB what speed it is running.