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13-11-2007, 09:05 PM
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#1 (permalink) |
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Senior Member
Join Date: Oct 2005
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Can I convert a three pin case fan to a four pin?
I have just replaced my motherboard. My new mobo has a four pin case fan header whereas the old one had a three pin one with a three pin fan.
I can connect the three pin fan to the motherboard but it means that i have lost the speed adjustment from the fan as the motherboard uses the fourth pin to control the speed. Is there anyway i can convert the fan to use the four pin controls? The case fan is built for the case so i dont think i can buy a four pin version. Edit: i dont mean a four pin molex power, i mean the four pin mobo header incase there is any confusion! Last edited by colincliff; 13-11-2007 at 09:14 PM.. |
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13-11-2007, 11:32 PM
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#2 (permalink) |
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YUKIKAZE
Join Date: Feb 2005
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Re: Can I convert a three pin case fan to a four pin?
What motherboard are you using? Most motherboards have the option of selecting between PWM (4pin) and Voltage (3pin) mode fan speed control.
And I believe there might a special chip within a 4-pin fan which allow the motherboard to control the fan, which a 3-pin fan wouldn't have.
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14-11-2007, 04:56 PM
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#4 (permalink) |
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Folding Flunkie
Join Date: Sep 2007
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Re: Can I convert a three pin case fan to a four pin?
You can set the smart fan control to use voltage rather than PWM (in the BIOS) although it should be alright set on auto...
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14-11-2007, 08:29 PM
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#6 (permalink) |
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Senior Member
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Re: Can I convert a three pin case fan to a four pin?
Originally Posted by Martin87
the seems not to be a normal size, designed for the case i think. it does not screw in on the fourt corners but has a bracket on one of the ends that fixes it to the case.
I havn't seen a replacement the same as it. |
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