Coolermaster Masterbox MB500, I am unable to control the fans' speed and they run at max all the time

[king_gill]

I have fully built my pc and it works just fine except the fact that it is super noisy because for some reason the fans always run at max speed. I thought I'd connect the fans to my motherboard but the fans had a 3 pin connector whereas the motherboard had a 4 pin. This is my first time building a pc so I could have made a very silly mistake, any help would be greatly appreciated. 

Thanks to you all in advance.

[Streetguru]

4 minutes ago, king_gill said:

 

What motherboard? It needs DC fan control to lower the speed of 3 pin fans. It's usually a feature only on higher end boards.

[king_gill]

It is an msi b450m gaming pro

2 minutes ago, Streetguru said:

What motherboard? It needs DC fan control to lower the speed of 3 pin fans. It's usually a feature only on higher end boards.

 

[Streetguru]

5 minutes ago, king_gill said:

It is an msi b450m gaming pro

 

Then just check the bios settings, or try the program speedfan

 

it lists DC/PWM and "full" fan control on the website

https://www.msi.com/Motherboard/B450M-GAMING-PLUS

[king_gill]

Alright I'll try that and let you know how it worked out.

Thanks mate