How to control fans through a fan splitter?

[proptangle]

Hello, i am currently using this fan splitter: https://www.webhallen.com/se/product/164598-Akasa-splitterkabel-for-4-pins-flaktar-0-9m to connect my 3 case fans. I have one fan connector connected into the mobo which then splits into 5 other fan connections. I have supplied the splitter with power from the PSU. I have this mobo btw: https://www.asus.com/Motherboards/PRIME-B450M-K/overview/

So, my question is: how can i adjust the speed of these fans? I have looked in the BIOS, FanSpeed and the Fan Xpert software from Asus and it doesnt detect any of my fans.

Thanks for any help!

 

[Ralston18]

Not sure but when I look at the molex adapter/splitter it only appears to show two pins. So if connected directly to a PSU molex connector all you get is power to the fans. No control options.

And it appears that the fan splitter is being somewhat misleading by using yellow wires.

Reference:

http://pinouts.ru/Motherboard/MbCpuFan_pinout.shtml

Here is link from within this Forum to provide more information:

http://www.tomshardware.com/answers/id-3658135/pin-pin-rgb-fan-power-connectors.html

 

[proptangle]

So there is simply no way to adjust the fan speed???

 

[jojesa]

You won't be able to control the fan speed using that fan splitter.
The power is coming from the PSU via a Molex connector instead of using power from the motherboard.
There are 2 pins missing on the motherboard fan connector so the motherboard won't be able to use PWM neither voltage to control the fan speeds.
You will need PWM fan hub to control the speed of fans connected to that splitter, otherwise they will run at full speed.

 

[proptangle]

Because what would be the point in including a connection to the mobo if its not usable?? :/

 

[proptangle]

How much does a PWM fan hub cost and how does it work?

 

[jojesa]

How much does a PWM fan hub cost and how does it work?

Check these two
-Phanteks PWM Fan Hub
https://www.newegg.com/Product/Product.aspx?Item=9SIAE3060P0642
-SilverStone PWM Fan Hub
https://www.newegg.com/Product/Product.aspx?Item=11-999-309

 

[proptangle]

Thank!