Question 3 pin fan connector into a 4 pin MB socket

bradrcfii

Distinguished
Sep 17, 2010
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Can I connect a 3 pin fan connector to a 4 pin motherboard socket that is labeled "fan"? I am planning using the 3 left pins leaving the right pin open?

Thanks,

Brad
 

AllanGH

Commendable
Mar 10, 2019
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You are approaching it correctly.

Be aware that you may have full-speed operation from a fan connector positioned in that way.

Check your MB manual and BIOS settings to see if those fan headers will support variable voltage speed control of the fans.
 

dorsai

Honorable
Nov 23, 2013
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Can I connect a 3 pin fan connector to a 4 pin motherboard socket that is labeled "fan"? I am planning using the 3 left pins leaving the right pin open?

Thanks,

Brad

Yes. There's a plastic panel on the motherboards fan header that acts as a guide to direct you to the 3 pins you need to use...the connector on the fan wiring harness has guides on one side that will line up with the panel on the motherboard fan header.
 

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