Review on 💙 Blue LED 120 mm Computer Case Cooling Fan by CONISY - Ultra Quiet, High Airflow Fans for PC Gaming by Nick Kussmaul

I connected this fan to a 3 pin connector on the motherboard that was used for an OEM fan and when I turned on the computer it was lit blue light for about 2 seconds. The fan kept running, but the indicator didn't light up until I turned off the computer, after which it stayed on for about 2 seconds. I then tried to see if the second fan was any better and it did exactly the same thing. I've looked everywhere for MOLEX adapter adapters to see if the lights are on, but the adapter cables are too expensive to justify keeping these fans. I'm returning fans for a refund. About an hour wasted and my fan problem is not solved.