Review on 🖥️ upHere 120mm Silent Red LED Case Fan 3-Pack with PWM Technology for Computer Cases, CPU Coolers, Radiators - Ultra Quiet, Premium Edition, 4-Pin Connections (R12CM4-3) by Josh Chenier

I am very happy with these fans. I buy a red PWM variant with a red ring that glows nice and evenly over the whole ring. I was worried there would only be a few LEDs visible, but the glowing ring looks great. I also really like the 4-pin PWM function. When installed correctly, you can tell immediately if the CPU is cold or hot, as the LEDs will be bright when the PWM is high, or very dim when the fans are barely spinning. Make sure your motherboard has enough 4-pin PWM. fan header. This product does not include MOLEX adapters or daisy chain adapters, so you will need a connector for each fan you wish to install. The kit includes rubber mounting stickers to reduce fan vibration. However, the fans aren't exactly silent when they're all spinning at full speed. I haven't measured, but I suspect the fan noise is at least 30dB. While it's a bit disappointing, PWM means that when the fans aren't needed, they're barely spinning and are much quieter.