Unfortunately, my motherboard does not support the control of the fan. That interpretation can but get at a retrofit, manual control and is of course not a problem of the fan itself. Since I've minimized the speed (the air flow rate is still quite high), the device runs almost silently.
Visually, the product is beautiful to look at. Through the narrow frame, the attention not of fan itself and the LED lighting is deflected. All very nice.
I am very happy and could not detect any defects. Strong buy recommendation.