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Honor Student
Posts: 3
Member Since: ‎10-27-2011
Message 1 of 8 (4,063 Views)

cooling fan, 2 pin connector, where's it plug in?

I have a Compaq Presario CQ5320F. I want to install another small cooling fan that has a 2 pin connector. I see where the stock cpu fan with the 3 pin connector is plugged in, but where do I plug in this 2 pin plug? Or even another 3 pin fan? Thanks

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Regents Professor
Posts: 4,494
Member Since: ‎09-04-2009
Message 2 of 8 (4,033 Views)

Re: cooling fan, 2 pin connector, where's it plug in?

[ Edited ]

skyereed wrote: I have a Compaq Presario CQ5320F. I want to install another small cooling fan that has a 2 pin connector. I see where the stock cpu fan with the 3 pin connector is plugged in, but where do I plug in this 2 pin plug? Or even another 3 pin fan? Thanks

Hello skyereed, I checked the motherboard specifications for your system, that can be found  Here .

 

It shows there are only two fan headers on the motherboard, one for the processor and one for the chassis fan.

 

If you want to or feel you need an additional fan, you could acquire an adapter that would connect to an existing power supply 12 volt lead (wire), and the other end connect to the 12 volt fan lead.

 

Your system appears to have Sata power connectors only, so you may have to try and locate a Sata to molex adapter and a molex to 3 or 4 pin fan connector. I could not locate a Sata power adapter to a 3 or 4 pin fan connector.

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Provost
Posts: 26,871
Member Since: ‎07-17-2009
Message 3 of 8 (4,017 Views)

Re: cooling fan, 2 pin connector, where's it plug in?

Hi,

 

This adapter might do the job if you have a spare molex power connector. 

 

BTW, connecting two fans to the same motherboard header might lead to a problem depending on the power draw from the two fans.

HP laptop 17t u100,
HP Photosmart 6520 and HP Deskjet 1112
Custom 1151 socket Z270 Intel i7-7700k @4,600 Mhz, 16GB Corsair 3000 Mhz dimms
Corsair H75 water cooler, Corsair CS 650M power supply
RAID 0 (dual Samsung 960 EVO m.2 240GB) boot system
Dual Samsung 840 EVO SSDs 500GB data storage, Intel 750 PCIe SSD 400GB
MSI NVIDIA GTX 980TI 6GB
ASUS ROG PG279q @144 MHz
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Honor Student
Posts: 3
Member Since: ‎10-27-2011
Message 4 of 8 (4,013 Views)

Re: cooling fan, 2 pin connector, where's it plug in?

thanks, I found the specs ok, but I still dont know the physical location - no labels I could find - of the chassis fan plug in. I currently have only a cpu fan mounted on the processor, so the chassis fan plug should be available if I can locate it! Thanks

Regents Professor
Posts: 4,494
Member Since: ‎09-04-2009
Message 5 of 8 (4,009 Views)

Re: cooling fan, 2 pin connector, where's it plug in?

[ Edited ]

skyereed wrote: thanks, I found the specs ok, but I still dont know the physical location - no labels I could find - of the chassis fan plug in. I currently have only a cpu fan mounted on the processor, so the chassis fan plug should be available if I can locate it! Thanks


Hello skyereed, if you look at my post immediately before Big_Dave's post, you should see a link to the motherboard specifications for your system.

 

Look in the section Motherboard Layout and you should see a diagram of the motherboard where the chassis fan header is located just above the PCIe x16 slot, near the middle of the motherboard.

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Honor Student
Posts: 3
Member Since: ‎10-27-2011
Message 6 of 8 (3,997 Views)

Re: cooling fan, 2 pin connector, where's it plug in?

THANKS!!!... I did  see a labeled photo somewhere months ago, but can't seem to locate it now....BUT, problem solved!!!!

Provost
Posts: 26,871
Member Since: ‎07-17-2009
Message 7 of 8 (3,994 Views)

Re: cooling fan, 2 pin connector, where's it plug in?

I don't recommend that you "splice" into the motherboard chasis fan header  to power aan additional 2 pin fan unless you know for certain that the current draw when combined with the other fan is below that rated for the motherboard. 

HP laptop 17t u100,
HP Photosmart 6520 and HP Deskjet 1112
Custom 1151 socket Z270 Intel i7-7700k @4,600 Mhz, 16GB Corsair 3000 Mhz dimms
Corsair H75 water cooler, Corsair CS 650M power supply
RAID 0 (dual Samsung 960 EVO m.2 240GB) boot system
Dual Samsung 840 EVO SSDs 500GB data storage, Intel 750 PCIe SSD 400GB
MSI NVIDIA GTX 980TI 6GB
ASUS ROG PG279q @144 MHz
Windows 10 and Windows 8.1 Pro x64 in UEFI mode
Regents Professor
Posts: 4,494
Member Since: ‎09-04-2009
Message 8 of 8 (3,986 Views)

Re: cooling fan, 2 pin connector, where's it plug in?

[ Edited ]

 Big_Dave wrote: I don't recommend that you "splice" into the motherboard chasis fan header  to power an additional 2 pin fan unless you know for certain that the current draw when combined with the other fan is below that rated for the motherboard. 


I totally agree with Big_Dave about the two fans on the same motherboard header. If the current draw is over the rated current for this fan header, the motherboard will fail at some point, and usually fairly soon.

 

I was under the impression that the chassis fan header did not have any connection to it.

 

Your best and safest option would be to acquire a proper adapter to connect the added fan.

 

Just some thoughts and Thanks to Big_Dave for bringing this up.

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