Flickering light and bright flashes.
I do not recommend this product at all. I already have a Corsair keyboard which I am very happy with, so I wanted to get these fans from the same brand to limit the number of software programs to manage RGB. Big mistake.
After a complete change of the kit with the LDLC after-sales service (always at the top), various exchanges with the corsair after-sales service, dozens of hours wasted on the forums looking for a solution that does not exist even though there are hundreds of us in this case, and even a change of motherboard, today I give up: I disconnect the lighting while waiting to buy other fans.
The two problems I have with this kit.
1: The light of the fans is flickering. A bit like lighting a wood fire, the brightness is not constant, there is a slight variation which would be tolerable if there was not another problem, which is totally unbearable.
2: It doesn't matter what lighting effect you choose. From the most flashy rainbow effect to a sober static lighting, to the pure and simple extinction of the led (0% luminosity). There are totally random big white flashes of light that totally disrupt the lighting of the box. Just imagine a big storm in your camera.
Not finding any solution after almost 1 year, I prefer to disconnect the lighting. It's a defective product that I can't use, that Corsair doesn't provide a solution for, and that I can't resell second-hand either. In short, 65€ lost. At least they are ventilating in the meantime...