DC12V 4-Wire PWM PC Fan Temperature Control Manumotive Fan Speed Controller Module CPU High-Temperature Alarm With Buzzer With NTC 3950 Thermistor - Rytronics.in
Amazon.com: ZRM&E 4Pin 12V PWM Fan Hub Speed Controller SATA 1 to 10 Way PC Cooling Fan PCB Adapter CPU Cooler Power Splitter Socket with PWM Connection Cable : Electronics
voltage - 12V to 5V regulator for PWM fan controller - Electrical Engineering Stack Exchange
High Frequency PWM Fan Controller
So you want PWM control of your 3-pin fan? | TechPowerUp Forums
Quick Hack: Converting a computer fan from thermostatic to PWM control | Rip It Apart - Jason's electronics blog-thingy
PID Fan Speed Control for 4-Wire Fans
Arduino PWM pc fan control | arduined.eu
Resurrecting a GPU cooling fan using a micro-processor and PWM - YouTube
circuit design - 4-wire fan controlled by potentiometer and 555 IC not behaving properly - Electrical Engineering Stack Exchange
Controling a four wire fan with an Arduino uno - Project Guidance - Arduino Forum
25 kHz 4 Pin PWM Fan Control with Arduino Uno - Hackster.io
12V 4 pin PWM fan - Raspberry Pi Forums
voltage - 12V to 5V regulator for PWM fan controller - Electrical Engineering Stack Exchange
4-Wire fans
DIY Fan Controller for PWM Fans - Overclockers
PWM Controlled Fan Regulator Circuit | Homemade Circuit Projects
Why and How to Control Fan Speed for Cooling Electronic Equipment | Analog Devices
How to properly control PWM fans with Arduino - Federico Dossena