Maximus X Hero MB - AIO and Fan connection

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dthorn012

Apr 22, 2018
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Hello,

I am a beginner and I just started building my PC. I have 6 Corsair 120RGB fans three of them are connected to the AIO, the other three are connected to different Cha_fan1,2 and CPU_Fan

As for the Corsair 150i AIO, I connected the three fan PWM connector to the AIO splitter. As for the AIO three pin, I connected that to CPU_OPT.

Are these correct, Or do I have to connect them to the AIO header on the board? In addition, is there a way to control the speed of the fan?

Thank you very much
 
Solution
devbiker
That works. The only challenge about CPU_OPT is that it is slaved to the CPU header. With this cooler, that's OK - you don't have to have the header set to full power. However, it can only be controlled by the CPU temperature, which isn't always the best control variable for case fans in a water cooled system.

You should be able to set the other chassis fans to use one of the motherboard sensors as the control source but make sure that you modify the fan curve accordingly. Also, keep in mind that the AIO header that (I think) your motherboard has is really just a relabeled case fan header that's set to full power by default; you can go into the BIOS and enable Q-Fan control for this header and treat it like any chassis fan header.
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devbiker

devbiker

Commendable
Dec 9, 2017
326
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Which Corsair 120 RGB fans do you have? They have 4 variations - SP, HD, LL and ML.

The 150i PROs fan header should be connected to the CPU_FAN header on your motherboard. It's only purpose is to provide a fan speed reading so that you don't get an error on boot.

Fans connected to the controller on the cooler - via it's 3 fan connections (it's not a splitter, actually) are controlled by the cooler itself. You can set your fan curves using Corsair Link. These, however, need to be 4-pin/PWM fans to be controlled from the cooler. So, in the Corsair RGB lineup, this means they should be HD, LL or ML fans, not SP; the SP-RGB fans are 3-pin/DC fans.
 
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dthorn012

Apr 22, 2018
2
0
10
Hey Devbiker,

Sorry, I have HD120. Since the 3 of them are connected to the H150I, I just fixed that and connected the three pin to the CPU_FAN. As for the other 3 HD120, it is connected to CPU_OPT, CHA_FAN1,2. Is this correct?

Thank you for your help!
 
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devbiker

devbiker

Commendable
Dec 9, 2017
326
3
1,215
That works. The only challenge about CPU_OPT is that it is slaved to the CPU header. With this cooler, that's OK - you don't have to have the header set to full power. However, it can only be controlled by the CPU temperature, which isn't always the best control variable for case fans in a water cooled system.

You should be able to set the other chassis fans to use one of the motherboard sensors as the control source but make sure that you modify the fan curve accordingly. Also, keep in mind that the AIO header that (I think) your motherboard has is really just a relabeled case fan header that's set to full power by default; you can go into the BIOS and enable Q-Fan control for this header and treat it like any chassis fan header.
 
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