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Can two PWM fans be wired to the same PWM port on a motherboard?

post #1 of 5
Thread Starter 
I do not understand why speed fan cannot control my 2nd rad fan that is plugged into a PWM fan header on my mobo. I can control the first rad fan with speed fan because it is plugged into the CPU PWM fan header.

I was thinking that I could solder the two sets wires together and then use one fan crimp. The black and red leads go directly to a PCB for power leaving only the sensor and RPM wires to plug in.


Thanks!
post #2 of 5
akasa PWM fan splitter

post #3 of 5
Thread Starter 
Why spend the money when I can just do it myself. I have to add some length to my rear case fan wiring so I could do that all at once.
post #4 of 5
Just make sure to connect just 3 pins at the 2nd FAN, that way you wont send 2 signals to the single socket in the motherboard.
This will allow you to simultaneously control both fans at same RPM according to the same temperature sensor.

And yeah if you feel like you can do it go ahead but c'mon the guy was trying to help.
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[RL-Tech]
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post #5 of 5
Only use one "tach" wire. Clip the rest of them. The board won't have any idea what's going on with multiple RPM signals coming to it.
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APU what?
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CPUMotherboardRAMHard Drive
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Overclock.net › Forums › Cooling › Air Cooling › Can two PWM fans be wired to the same PWM port on a motherboard?