connecting more case fan

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EasyLover
Point is if you connect PC Case fan on auxiliary cpu fan header, you may not be able to control it. Its speed would be controlled by the mobo depending upon the temp of the CPU and even if you may manipulate it thru some software, it will still may not work as desired except that it will run for sure.

Power fan connector for PSU! No. PSU fan run on its own power supply from within psu. It's fan is not connected on the mobo. If you are not sure then you can molex the fan. See below pics for reference purpose.

Pic 1: Y-Splitter cable
YFanSplitterCable_zpsbabe1ebe.jpg


Using this type of cable you can connect two or more fans on a single cable...
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EasyLover

EasyLover

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Dec 30, 2013
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You have total five fan headers on this mobo.

one 4-pin CPU fan header
one 3-pin CPU fan header
one 3-pin power fan header
one 3-pin chassis fan header
one 4-pin chassis fan header


Yes, you can buy another PC Case fan and connect on fan header. No issue.
 
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alyoshka

alyoshka

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Oct 2, 2009
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- 2 x CPU Fan Connectors (1 x 4-pin, 1 x 3-pin)
- 2 x Chassis Fan Connectors (1 x 4-pin, 1 x 3-pin)
- 1 x Power Fan Connector (3-pin)

Why would you be using the power fan header for the cpu?????
It would be saner to use the CPU 4-Pin Header with the CPU Heatsink cooling assembly.....if the HSF is a PWM, or the 3 PIN CPU Fan header if the fans a standard 3 Pin fan....

Leaving the CPU headers out of the equation you are free to connect the rest to fans inside the case if existent or get more fans and use up the headers...
That leaves you with one header to fill actually since you have 2 Case fans already on.
I would not suggest using the other CPU header for a case fan since the we don't exactly know how the circuitry of the 2 CPU Fan headers work.
Possibilities....
Fans with different current requirements might reduce the life of the CPU fan powering circuitry
Speeds might not be controlled the way you want them to be controlled
Burn or stuck fan could lead to a overheated processor burnout.

So the USE of the CPU Fan header on the Mobo for any other fans other than the CPU HSF or a LCL Setup would not be advisable.
Stick to using the 3 other headers for Case fans....
Get an external fan controller powered by a free HDD Power cable to drive any additional fans if you really feel you need to get more air in/out of the case.
 
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H

headhunter55

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Aug 19, 2014
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Hi, i reconnected it,

2 x CPU Fan Connectors (1 x 4-pin, 1 x 3-pin) -> one is for the CPU stock cooler?
2 x Chassis Fan Connectors (1 x 4-pin, 1 x 3-pin) -> connected to my 2 chassis fans
1 x Power Fan Connector (3-pin) -> is this one for the PSU?

Is it correct?
 
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EasyLover

EasyLover

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Dec 30, 2013
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Point is if you connect PC Case fan on auxiliary cpu fan header, you may not be able to control it. Its speed would be controlled by the mobo depending upon the temp of the CPU and even if you may manipulate it thru some software, it will still may not work as desired except that it will run for sure.

Power fan connector for PSU! No. PSU fan run on its own power supply from within psu. It's fan is not connected on the mobo. If you are not sure then you can molex the fan. See below pics for reference purpose.

Pic 1: Y-Splitter cable
YFanSplitterCable_zpsbabe1ebe.jpg


Using this type of cable you can connect two or more fans on a single cable and then connect the single end on available fan header on the mobo.

Pic 2 Molex Power connector
MolexConn1_zps3274b3e1.jpg

Using this type of connector, you can connect the fan directly to the PSU itself. However, doing so will not give you any control over the fan.

Else you can use fan controller. There are so many available out there in the market.
 
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Solution
Adroid

Adroid

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Jul 2, 2009
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Yes you can use the motherboard fan headers.

The only benefit of plugging fans into your motherboard is that you can control the fan speed. You can also plug fans directly into your PSU (they will just run full speed all the time).
 
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alyoshka

alyoshka

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Oct 2, 2009
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Yes, you're correct.
You can plug another case fan in to the Power Fan Connector, but, you'll not be able to control it's speed.
The Rest of the fans will be controlled by the Mobo.....

"1 x Power Fan Connector (3-pin) -> is this one for the PSU?"

No.
 
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