4 Pin Fan Controller?

Associate
Joined
8 Apr 2009
Posts
98
Maybe i just missed them but couldnt seem to find any fan controllers for 4 pin fans. So unless there is any, is there any adapter to be able to connect them to a 3 pin fan controller?
 
Last edited:
Need 1 of them per fan right? got 3 fans in total.
So how do they work, obviously one end goes to the fan, but what about the two molex connectors?
 
Problem is that you haven't defined your terms. Is a 4 pin fan a molex one or is it a 4 pin pwm one? This is the answer if your fans normally connect to the power supply. One per fan.

This is the best answer, it runs all three pwm fans from your motherboard cpu header. Molex powered so can't hurt the board. If I had 4 pin rather than 3 pin fans I'd be using this cable. You don't get to turn any dials, but equally you no longer have to
 
That PWM Fan Splitter Cable is interesting... Wonder if it will give enough juice to run Akasa Apaches (guess i could plug one into the CPU header and test).

Does anyone know if they can they be chained? I have 4 case fans and a CPU which I would like to connect.
 
I have a similer problem, I have 4 case fans but my Asus mobo only has 3 case fan power outputs. I use the Asus mobo software to control the fan speeds and it works great; keeps them nice, quiet and the case cool.
However, the fourth fan is connected to a molex connector and I have no control over it. Could I share the power supply of one of the other fans on the one I have connected to the Molex?

or, my mobo has what appears to be a power output for a PSU fan, could I use this instead? Mobo is ASUS P5Q delux

To OP, sry for hyjacking your thread, but I felt our problems were too similar for a new one.
 
It will probably have a Power fan connection. thats just a 12v connection with no speed control. Get a Fan Mate 2 (4 quid) to control the 4th fan and connect it using a spare molex or that power fan connection.
 
That PWM Fan Splitter Cable is interesting... Wonder if it will give enough juice to run Akasa Apaches (guess i could plug one into the CPU header and test).

Does anyone know if they can they be chained? I have 4 case fans and a CPU which I would like to connect.

It depends on the fan. Arctic Cooling allow 5 of their 12025PWM fans to be daisy chained off a CPU PWM header. I have run 6 though and it didn't blow up.
 
The pwm splitter is a different beast though, it draws power from a molex connection. So it'll give out whatever that rail on your psu will cope with, i.e. many fans.

I'm not sure about chaining them. I'm certain a 4 pin Y splitter with two of the akasa pwm splitters plugged in would work, but I haven't tested this. Mainly because I don't have any pwm fans.

Its possible you can chain them, obviously you'd get 5 fan connections not 6 with two of them. I can't quite tell from the photos.

@sxndy, either run two off one header with a y splitter (potentially dangerous, check with asus what the fan headers are rated for. The p5q premium can output 24W on its fan headers, but I don't know about the deluxe). Or get a fan controller/resistor. Or slightly rewire the molex to 3 pin adapter youre using, you want the fan drawing power from 12V and 5V not from 12V and 0V. It means pulling two pins out of the molex plug and swapping it over, google wil provide a lot of images if you can't visualise what I mean. That'll run it at 7V steady, which is generally quiet enough
 
@sxndy, either run two off one header with a y splitter (potentially dangerous, check with asus what the fan headers are rated for. The p5q premium can output 24W on its fan headers, but I don't know about the deluxe). Or get a fan controller/resistor. Or slightly rewire the molex to 3 pin adapter youre using, you want the fan drawing power from 12V and 5V not from 12V and 0V. It means pulling two pins out of the molex plug and swapping it over, google wil provide a lot of images if you can't visualise what I mean. That'll run it at 7V steady, which is generally quiet enough

Checked the P5Q manual and the output for each one is 24W just like the premium. I'll check the fans when I get home and prolly go for the splitter if it adds up ok.
 
The akasa pwm splitter cable is a great piece of kit, i run 3 pwm fans of it on an asus p5q deluxe (2 on a TRUE, 1 exhaust), 2 front intake fans are on an akasa junior fan controller, this leaves me with 4 spare fan connectors on the board (incl pwr fan) if i ever add any more fans.
 
Yeah, my Apaches start and run when connected to the PWM pc port so im gonna give that splitter a blast. Will probably just use it to control the CPU fan and 2 case fans, leaving the rest on fan mates....

...i could just get a fan controller, haha.
 
Back
Top Bottom