Features: Precisely Speed Control : This 4wire fan controller offer accurate speed adjustment with 0-100% duty cycle, solving traditional fan inflexibility issues. Perfect for computer and servers requiring fine temperature management. Wide Compatibility :Supports standard 4pin protocols and works with various fan brands without adapters. The plugs and play design ensures easy installation in multiple power scenario. Efficient Cooling Solution : Intelligent speed regulation reduces device temperature effectively, extending component use. Ideal for high performances computers and gaming setups. Durability PCB Construction : Made with quality PCB for long term stability, preventing failures from materials degradation. Reliability for professional users. Quiet Operate :Optimized algorithm minimizes fan noise, creating a peaceful environment for home offices or nighttime use. Features compact, quiet design for builds. Specifications: Component:PCB Product name: speed regulator Size:Approx.45X40mm/1.77X1.59In Input voltages: 5V Output voltages: 12V Frequency: about 25KHz Output current: 0.5A, upper limit 0.7A Input port: USB TYPE C female port Output port: 4Pin (KF2510) Speed adjustment ranges: duty cycle 0-100% 2Option Type; Features:Supports 4wire protocols, Plug and play without wiring,,0–100% stepless adjustment,85%-90% efficiency boosting conversion, Package Includes: 1pc Speed Controller note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.