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Download 4 pin fan pinout8/8/2023 ![]() ![]() I think the point Raja was trying to get across is the difference between what is usually labeled as CPU fans and System fans on motherboards, and the fact that even if both have 4-pin connectors, only the CPU fans are usually set to run in PWM mode, some even exclusively so as a default setting. So if I have a Noctua NF-A14 140mm 4 pin fan to be installed in the case, and it's a PWN fan, it will not work in PWN mode? My mobo is Asus Z97-A, thanks. Even if you plug in a 4 pin fan it will be controlled, just not in PWM mode). Hi, I didn't understand when you said (On our boards the 4 pin chassis headers control in DC mode only. ![]() The CPU headers can be set to control in voltage mode by changing the CPU fan header setting to Advanced in UEFI. Even if you plug in a 4 pin fan it will be controlled, just not in PWM mode. On our boards the 4 pin chassis headers control in DC mode only. ![]() The poster above assumes the 4 pin chassis headers control in PWM mode, that is not the case. The chassis fan headers control in DC mode NOT PWM so your 3 pin fans will be controlled fine. What are the pros and cons of running the fans all the time? I plan on overclocking quite a bit, so I imagine it will get toasty in there. ![]()
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