What Is the Difference Between Three- and Four-Pin CPU Fans?
1PC FOXCONN PVA070F12H 12V 0.42A 7020 7CM 4-wire PWM CPU cooling fan | eBay
So you want PWM control of your new CPU fan? | TechPowerUp Forums
Dedicated Fan Adapter 18cm 5 Pin 4 Wire Computer Pwm Cpu Pc - AliExpress
4 Wire PC Fan
1PCS NEW FOR Sanyo 9GV0848P1G13 8038 48V 0.84A 4-Wire PWM Cooling Fan 6947669234916 | eBay
4 Wire PC Fan
4-Wire fans
4 Wire 2 Channel PWM Fan Temperature Controller PC Fan Motor Speed Controller LED Digital Thermostat DC 12V 24V Heat Sink|Motor Controller| - AliExpress