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how can I connect 3 pin fan to power supply?

Last response: in Components
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November 6, 2013 1:28:31 PM

I have 4 pin atx ( it has 2 by 2 pins in a square formation,not rectangular 4 pins next to each other) coming from psu and want to use it to power dual fans that have one 3 pin cable. How do I do it ? What adapter do I use?

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a b ) Power supply
November 6, 2013 1:53:03 PM

The 4pin atx is for the MB power connector.
You need something like the 4-pin Molex to 3-pin adapter.
http://www.universalpart.com/Fan-Molex-To-3-Pin-4-Pin-T...
or http://www.avadirect.com/product_details_parts.asp?PRID...

Then you can plug the fan into the PSU 4pin molex.
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a b ) Power supply
November 6, 2013 1:54:32 PM

Your computer boots without the 4-pin ATX connector plugged in?

Technically, that connector's not meant to power fans, so there isn't an adapter to connect anything to it. However, there are adapters available to connect a 3-pin fan connector to a 4-pin Molex.

Casey
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November 6, 2013 2:10:40 PM

cklaubur said:
Your computer boots without the 4-pin ATX connector plugged in?

Technically, that connector's not meant to power fans, so there isn't an adapter to connect anything to it. However, there are adapters available to connect a 3-pin fan connector to a 4-pin Molex.

Casey


I have two cables one is connected to mobo and another isn't connected to anything. I dont think I have free Molex socket on power supply. How else could I connect the 3pin fan? I don't have free slots on mobo
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