PWM fan | Delta Fan and Thermal Management Products | Delta Electronics Inc.
Amazon.com: Taidacent 2510-4P 3P Manual 4 Wires 0-5V 12V Fan Speed Controller PWM Speed Control On Off Switch for PC CPU Case Fan with Knob (White Connector with Plastic Black Knob) :
GameMax V4.0 ARGB PWM 9 Port Black 8 x Fans Hub With SATA Power and RF Remote