General description The 2X 4 Pin PWM Fan Speed Controller is designed for efficient control of 12V fans and PWM pump heads, making it an ideal solution for DIY cooling systems. It features a USB Type-C input and a built-in DCDC boost circuit that converts USB 5V to 12V, allowing for versatile power supply options. Technical specifications Input Port: USB Type-C Output Power: Recommended between 7 and 8 watts (12V 0.6A) Fan Speed Adjustment Range: 0-100% Maximum Output Current: 0.7A (short-term use), 0.5A (long-term use) Common Fan Rated Current: Generally less than 0.2A, rarely exceeds 0.3A Material: Plastic Color: Black Package Contents: 2 x PWM Speed Controller, 2 x USB to TYPE-C Power Cable Measurement Allowed Error: +/- 1-3 cm Usage The controller allows for easy adjustment of fan speed by turning the knob clockwise to increase speed and counterclockwise to decrease speed or turn off the output. It can control multiple fans simultaneously using a single tow line. Other information