DC 12V Single PWM Speed Controller Fan Speed Controller Mute 4Pin for PC CPU Fan
The PWM frequency is 25KHZ, which can adapt to most 12V adjustable speed fans on the market. 4: PWM frequency is 25KHZ. 100W 5A TYPE-C Decoy PD 2.0 3.0 QC4 QC5 to 5V 9V 12V 15V 20V DC Trigger Adapter.