Glad to hear that somebody else experience it and may not be hardware issue. Well the first three ports work for me and the last 3 don't (with the brand new hub). With the old hub the first 3 worked correctly, port 4 and 5 gave a very strange rainbow color to the fans and last port was not working at all. Commander Pro fan controls do not work anymore. I use the Commander Pro with a bunch of fans, a mix of 3 and 4-pin. It was working okay since late last year. I've got all the fans set to follow a curve using the CPU or GPU temp. The sensors themselves work fine, the right temps are reported. In the past week or so, none of the curves work anymore. I was told to use the "Commander Pro" controller so I brought one and used it. However after moving the RGB Hub to the controller through "LED 1" it only uses port 1 ont he RGB HUB. iCUE reads and sees the fans, just not the RGB part. So, I switched to "LED 2" and still get the same result. I thought that 2 of the 3 SP RGB fans on the case
Using a straightened paperclip or similar, press the reset button found in the hole described and whilst continuing to hold the reset button down, reconnect the SATA cable (three hands would come in useful here). Release the reset button. After a brief-ish period, the Commander Pro should be recognised by the system.
Test 1: Individual performance mode ( ability to make custom fan configurations in case) Commander pro - set to auto on all 6 fans. Performance mode: Quiet. 120 mm fans are averaging 1500 rpm. 140 mm fans are averaging 1400 rpm. Performance mode: Extreme (Balanced is identical) 120 mm fans are averaging 1700 rpm.
The native sensors for the Commander Pro are the temp probes on that specific Commander Pro. C-Pro 2 cannot use C-Pro 1's temp sensors as a native source. So you should be getting either full speed max from C-Pro 2 on boot or you do have at least one temp probe from C-Pro 2 in place and if so, is that the control source for those fans?
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corsair commander pro not working