CriticalKush Posted December 11, 2021 Share Posted December 11, 2021 Hey everybody, yesterday I bought a Corsair iCue 220T RGB Glass Case, 3x SP120 Pro fan and 2x LL120 fan. To control the fans and LEDs I use a Corsair Commander Core XT. My problem is iCue 4 can't control the fan speed. The SP120 are locked around 600-800 RPM and the LL120 are locked around 1400 RPM. (But the LED control works fine.) I've read many forum entries and tried a lot. For example, user-defined presets, restart, reinstallation, updates, delete settings from AppData, etc. Unfortunately, nothing helped... Maybe someone had the same problem and maybe they can help me. Thanks in advance! Greetings Critical My PC MB: ASUS Q87M-E PS: be Quite 550W 80Plus Platinum GC: NVIDIA RTX 3060 RAM: 16GB [4 x 4GB] Processor: Intel i7-4790K HD: 4TB [2x 500GB HDD(WD) ; 2x 500GB SSD (Samsung, WD)] Fan: 3x Corsair SP120 Pro 2x Corsair LL120 Controller: Corsair Commander Core XT Link to comment Share on other sites More sharing options...
Solution c-attack Posted December 11, 2021 Solution Share Posted December 11, 2021 The Commander Core and XT controllers are PWM only. The SP-Pro from the 220T are 3 pin DC motors controlled by lowering/increasing voltage. The constant 12v of a PWM controller will make a DC motor run at maximum all the time. You’ll need to move those SP-Pro to the MB for voltage control. 1 Link to comment Share on other sites More sharing options...
CriticalKush Posted December 11, 2021 Author Share Posted December 11, 2021 1 minute ago, c-attack said: The Commander Core and XT controllers are PWM only. The SP-Pro from the 220T are 3 pin DC motors controlled by lowering/increasing voltage. The constant 12v of a PWM controller will make a DC motor run at maximum all the time. You’ll need to move those SP-Pro to the MB for voltage control. Thanks! I suspect it will be the same with the LL fans, even if they have a 4 pin connection, right? Link to comment Share on other sites More sharing options...
c-attack Posted December 11, 2021 Share Posted December 11, 2021 No. 4 pin is PWM and 3 pin is DC voltage. The LL will work as expected on the Commander Core/XT. 1 Link to comment Share on other sites More sharing options...
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