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Sorry for the late reply and thank you both kindly for your answers. As suggested, I switched two fans in the repeater (3 and 2) and now have much more consistent results. In almost all cases, all fans are detected properly now. Every now and then (after booting from UEFI settings for example) it happens that only 2(? instead of 6!) fans are shown, which is super weird. But a power cycle fixes that. So for the moment I'm satisfied 🙂 Thank you!

Hi everyone, I just got done building a new PC using an iCue 7000X RGB tower. Everything went smoothly but I have some trouble with the PWM repeater and Commander Core XT. The setup is as follows: Port 1-3 are three fans on top. Port 4 is connected to the repeater. The repeater connects the three front facing fans (seen left marked 1,2 and 3) - note that the "FAN 1" pin is connected (with input labeled 3 on the top left). Port 5 on the Commander is the single pre-installed fan on the back. Port 6 is the water pump. iCue shows 5 devices connected, it's missing the PWM repeater. Thus, the front facing fans are off. Whichever Port i plug the PWM repeater in is not visible after a full power cycle. BUT: If I connect the PWM repeater to another port visible in iCue while the PC is running, the fans will turn on and I'll be able to control them and have an RPM reading. So I guess the Commander can't correctly identify the repeater on bootup, everything else seems to be in order (power and cables). Does anybody have an idea what I'm doing wrong? Thanks everyone in advance! (This is the working configuration where I unplugged the back fan and instead connected the repeater there, labeled "Front". There's still only 5 devices shown though. In this config the back fan is off, even though it's plugged in.)