4-Pin B3 4-Wire PWM Fan Speed Controller Module 5V to 12V Fan Governor Wind Speed Controller Regulator with Switch Speed Module

Product feature:1. Supports the standard 4-wire PWM protocol and is compatible with speed control on mainstream motherboards2. Plug-and-play with no wiring required; suitable for a variety of power supply scenarios3. 0–100% stepless PWM adjustment, precisely balancing silence and cooling4. High-efficiency boost conversion with 85%–90% efficiency for more stable operation5. Compact and quiet design, ideal for DIY modifications and optimizing silent PC buildsProduct Description:The PWM speed controller features a C-port input and a 4-pin mini-connector output for PWM fans. It incorporates a built-in DC-DC boost circuit that steps up 5V to 12V. Speed control is achieved by outputting a PWM signal. Due to losses in the built-in boost circuit (efficiency approximately 85%), excessive output current will result in significant heat generation. It is recommended to keep the output current below 0.5A, though it can reach 0.7A for short periods.Specifications:Product Name: PWM Speed ControllerInput Voltage: 5VOutput Voltage: 12VPWM Frequency: Approx. 25KHzOutput Current: Rated 0.5A, Maximum 0.7AInput Port: USB Type-C Female ConnectorOutput Port: PWM 4-Pin (KF2510)Speed Control Range: PWM Duty Cycle 0–100%Package Contents:Speed Controller Module × 1