Fan control for 3-pin fans over 4-pin splitter

[friend'scatdied]

If I use a 4-pin PWM fan splitter such as this and connect 3-pin fans to it, would I still be able to voltage-regulate the 3-pin fans for fan speed control from my motherboard?

I have an ASRock X99E-ITX/ac and it mentions support for control of either 4- or 3-pin fans. I'm just wondering if the splitter being 4-pin would somehow force the motherboard into operating in PWM regulation.

 

[Araxie]

You will be able to voltage control the fan just fine without problems.. but also remember that doing this force the motherboard to run hotter as the voltage regulation is a extra workload that's the reason not every mobo support voltage regulation to fans... but apart of that you will be fine, even connected the 4 pin connector it will be disabled, it's just like connect the splitter alone without fan, it will cause no effect..

 

[Deleted member 278999]

Weird coincidence, I just ordered 5 of those same splitters from Amazon this afternoon!

The only thing you may want to be careful about is the amperage. I have a ASUS Gene VI and asked them. No answer as of yet. It's not the same motherboard that you have. But I'll update this when and if I get an answer so that you can have a general idea of the amperage you can pull.

 

[null]

You will be able to voltage control the fan just fine without problems...

Hmmm, I was going to reply w/the opposite. When I connect a 3-pin fan to the exact splitter OP linked to, it spins at full speed.

Edit: nevermind. In my case the splitter is connected to my cpu fan header (pwm). OP is inquiring about voltage rpm control, not pwm.