One end of it plugs into my power supply. The 2 molex adapters I plan to hook up to 2 case fans. Here comes my question. Can I plug the 4-pin female adapter on the end of the cord to the motherboard so I can have fan speed control? Or will it fry the motherboard? Here's what Im talking about:
My motherboard has 1x 3pin CPU, 1x 3pin PWR, 1x 4pin SYS1, and 1x 3pin SYS2. Its one cord with power plug, 2 molex, and 4pin on end of it. Just wanted to see if I could hook the power part to the power supply, the 2 molex to case fans, then the 4 pin to the motherboard for fan speed control. Heres somemore pics.
I'm sorry, yes, the CPU fan header does have 4 pins. The 6 pin plugs into my Hive-650 power supply. I have 4 outlets on the back of the power supply for 6pin connections. That cord im my OP has a 6pin on one end(power supply) 2 molex, middle of cord (for my 2 case fans) and a 4pin on the end of it. I was just wondering if I plug the 6pin into my power supply, then 2 case fans to the 2 molex, if I could plug the 4 pin into the 4pin(SYS1) on the motherboard to have the 2 case fans have speed control? I guess its one or the other like you said? I cant have both plugged in?
AFAIK, the only fans that have speed control are:
1) the ones plugged into 4 pin sockets on the motherboard
2) fans installed on dedicated hardware (like video cards)
3) the ones that are connected to stand alone fan management systems
4) the fan itself has some kind of regulating hardware built into it
If you do it any other way you probably won't have speed control.
MOLEX fans run at the maximum speed all the time except in the above situations as far as I am aware.