![Controlling a 4-wired fan PWM Signal using Arduino allows only two settings - Electrical Engineering Stack Exchange Controlling a 4-wired fan PWM Signal using Arduino allows only two settings - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/cmwAy.jpg)
Controlling a 4-wired fan PWM Signal using Arduino allows only two settings - Electrical Engineering Stack Exchange
Is it possible/safe to get an adapter for my fans that connects two 3-pin fans to one 4 pin on the motherboard? - Quora
Is it possible/safe to get an adapter for my fans that connects two 3-pin fans to one 4 pin on the motherboard? - Quora
![Asetek Fan Speed Controller Kit, 3pin Fan/Fan Controller/ Motherboard Kit LN22032 - AK-FC-08-AT | SCAN UK Asetek Fan Speed Controller Kit, 3pin Fan/Fan Controller/ Motherboard Kit LN22032 - AK-FC-08-AT | SCAN UK](https://www.scan.co.uk/images/products/783848-a.jpg)
Asetek Fan Speed Controller Kit, 3pin Fan/Fan Controller/ Motherboard Kit LN22032 - AK-FC-08-AT | SCAN UK
![are all 3 pin fans running at (5v) and all 4 pin fans running at (12v)? If so, why is a 3 pin fan able to connect to a 4 pin header are all 3 pin fans running at (5v) and all 4 pin fans running at (12v)? If so, why is a 3 pin fan able to connect to a 4 pin header](https://preview.redd.it/are-all-3-pin-fans-running-at-5v-and-all-4-pin-fans-running-v0-eq5o5vbas70b1.jpeg?width=602&format=pjpg&auto=webp&s=06d61a3991e72f3b38f5ded69f5dcb36a52ab11d)