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Old 01-20-2011, 11:51 AM   #1
StriperMike
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Default Connecting case fans to pwr_fan connector

I am in the process of building my new PC and have a question regarding connecting my case fans to my motherboard. My case currently has 3 fans (HAF 922). My mobo (Asus P8P67 Pro) has only 2 cha_fan connections. I connected 2 of my case fans to the cha_fan connectors but now am left with one disconnected fan.

The mobo does have a pwr_fan connector that is not being used since my PSU does not provide a connector for that.

My question is can I connect my 3rd case fan to the pwr_fan connector? I'd like to be able to connect all three fans to the motherboard if possible without using a PSU molex. This way I can avoid additional cable clutter, having the fan speed constantly be at 100% and hopefully control fan speed thru the UEFI/Windows.

Thanks!
Mike
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Last edited by StriperMike; 01-20-2011 at 12:24 PM.
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Old 01-20-2011, 12:02 PM   #2
Rhonen
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There should be a 3rd fan connector on the P8P67 Pro labeled pwr_fan, top right corner of the board above the EPU switch. I used that one and it worked fine.
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Old 01-20-2011, 01:25 PM   #3
StriperMike
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Do you know if you are able to control the fan speed when connected to the pwr_fan connector through UEFI or a Windows based solution? Does the pwr_fan operate the same way the cha_fan connectors?
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Intel i5-2500K | ASUS P8P67 Pro | G.Skill 16GB DDR3-1600 | Cooler Master Hyper 212+ | Cooler Master HAF 922 Case | Gigabyte Nvidia GTX 670 | 1 - 250GB Samsung 840 SSD | 1 - 1TB Seagate 7200.12 | Corsair HX-750 PSU | Samsung SH223 SATA DVD-RW | Samsung 245BW | Logitech z560 | Windows 8 Pro (for now)
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Old 01-20-2011, 01:31 PM   #4
Rhonen
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Oh, that, I don't know, I just put it together last night, so I haven't even taken a good look through the UEFI yet.

edit: I did took a quick look at the manual (dowloaded pdf from website), and it mentions the included asus utility software has a cpu and chassis fan controls, still don't know if that includes any fans connected to pwr_fan.

Last edited by Rhonen; 01-20-2011 at 01:46 PM.
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Old 01-20-2011, 02:07 PM   #5
Accord99
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On my P8P67 Deluxe, the PWR fan connectors can't be controlled by Asus Q-Fan or the Fan XPert utility. Only the two CHA fan connectors work with 3-pin fans, while the CPU fan connector requires a PWM fan for control.
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