Case Fan Help

Shadeslayer110 · Jun 29, 2014

Hi,
I am currently building a PC and I had a question about plugging the fans into the motherboard. I am using a NZXT Phantom 410 and the ASUS Z97-A Motherboard. I have connect the Molex to the connector in the PSU. However, there are four small connectors shown here: http://www.overclock.net/t/1247303/solved-need-help-setting-up-nzxt-phantom-410-fan-controller that are not specified to put anywhere. Do I have to plug these into the motherboard?

tambeshakunt · Jun 29, 2014

You plug the MOLEX into the PSU to power the controller. Then you plug in each 4 or 3 pin fan into the 4 connectors you can see. They are controlled by the molex power. If you connect fans to this controller, then you can't plug into motherboard. You can either have motherboard OR controller. If motherboard, they are software controlled and if controller, then it is manually controlled by you.
P.S Unfortunately you can't use molex fans with this.

scout_03 · Jun 29, 2014

the molex to the psu the other one goes to the fan conttroller in the case that will permit to ajust fan speed check the case user manual .

Shadeslayer110 · Jun 29, 2014

tambeshakunt :

Where do you plug the 4 3 pin fans? Where is the connector?

tambeshakunt · Jun 29, 2014

Shadeslayer110 :

tambeshakunt :

Where do you plug the 4 3 pin fans? Where is the connector?

Its the four connectors as you see in the picture.

Shadeslayer110 · Jun 29, 2014

tambeshakunt :

Shadeslayer110 :

Its the four connectors as you see in the picture.

Where are those 4 connectors connected to? The fans?

tambeshakunt · Jun 29, 2014

Shadeslayer110 :

tambeshakunt :

Where are those 4 connectors connected to? The fans?

No its like this.

Case fan controller = molex + 4 x black female connectors (like in picture )

Molex --> PSU
Each Fan --> one of the female connectors

Shadeslayer110 · Jun 29, 2014

tambeshakunt :

Shadeslayer110 :

No its like this.

Case fan controller = molex + 4 x black female connectors (like in picture )

Molex --> PSU
Each Fan --> one of the female connectors

Ok, thanks. it is like that, however, the fans still do not work when I turn it on. Why is that? Two of the small connectors where already in the fan control

JackNaylorPE · Jun 29, 2014

You generally have two means to control fans:

1. Motherboard
2. Fan Controller

The Motherboard offers more fine tuning and "hands free" control . Fan Controllers are mostly hand (knobs) control. If using CHA / OPT headers on the MoBo, you can't use that in conjunction with a PCB or cable splitter feed from PSU as 12v from PSU will override the voltage signal from the Motherboard.

-ModMyToys sells PCBs which take a variable DC voltage signal and will send it to multiple 3 pin fans

-Swiftech sells a PCB that takes a PWM signal from the CPU headers and will send it to multiple 4 pin PWM fans. This does work with the 12v PSU signal as it's PWM not voltage controlling the speed.

-Phanteks make a combination PCB that is unique in that takes either a PWM or DC voltage signal to control 3 pin DC fans. If you use the 12v PSU feed, then you must use a CPU PWM header or again the 12 signal over rides the speed control.

In short .... other than the Phanteks unit

A DC controller can work automatically with variable voltage control via the MoBo only if not using the 12v connector. This leaves you with either "knob / switch" control or some sort of control integral to the controller itself, negating the functionality any type of MoBo connection.

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