The motherboard controls the fans with a PWM signal. Other posters are right that your motherboard can’t power your fans directly, but if you can find a suitable MOSFET module (or solder up your own) you can use the signal from the motherboard without pulling too much current and damaging it.
The motherboard controls the fans with a PWM signal. Other posters are right that your motherboard can’t power your fans directly, but if you can find a suitable MOSFET module (or solder up your own) you can use the signal from the motherboard without pulling too much current and damaging it.
Something like this would work well: https://www.ebay.com/itm/225225930694