My copies of these fans did indeed work (unlike a couple other reviewers'). However the actual airflow is insignificant even at maximum speed, to the point where I suspect the cooling impact is negligible. Also, the fans use a non-standard pinout (which integrates power, speed control, and RGB) so they can only be used with the included controller. They cannot be powered, controlled or lit directly from a motherboard. My use case is to boost the perceived aesthetics of cheap computers that don't really need case fans for cooling (and do not have ARGB headers anyway), so from that standpoint the value for money here is solid.

sur 6 ventilateurs, il y en a 2 qui ronronnaient comme un tracteur lors de leur premier branchement

Reply by our customer service

Bonjour Je vais vous envoyer 2 nouveaux modèles, il n'est pas nécessaire de renvoyer les modèles défectueux.

basic mes fait la job pour le prix