Kimojacky

Finally, I issue RMA to replace XD5 and report RPM to iCue now.:D: Thanks for helping me.

Thanks for your details advice. Unfortunately, I just find my C-Pro fan port #6 was defect...even I connect noctua pwm fan still no signal:[pouts: I will return C-Pro to vendor and will update this again. Thank you.

Just tested. Seems XD5 no issue but iCUE/CommanderPro does. I make a quick test and connected to MB CPU header and tune the RPM to silent or full speed. I can see the water flow speed have difference.

Yes, pump was connected to Commander Pro fan port 6 and set "4 Pin"

First, I must say sorry for my bad English. And I am come from Hong Kong. Recently I got a set of Hydro X and completed to install on my 280x. Pump > CPU > Radiator All the cable was connected and correctly. Why the Pump rpm still show 0 rpm in iCUE? Is there anything I missed? https://imgur.com/a/By2PXw7