Question How to control a Cooler Master HYPER H410R CPU Fan speed?

Yep, you have the solution for that already. Adjusting in BIOS Setup alone does not let you observe and adjust in real-life operations. But the mobo comes with an app called A-Tuning which includes fan header adjustments among many items. This app runs under Windows so you can put it on your screen and watch and use it while doing other stuff. See you mobo manual on p 40 and onwards to get into it and how to use.
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