1. Voltage conversion: This fan cable converts 5V USB power to 12V output, providing power for 12V fans. 2. Speed adjustment function: Features a built-in speed control switch with three settings: Low speed for quiet environments, medium speed for general use, and high speed for enhanced cooling in high-temperature conditions. 3. Easy connection: Connects via USB interface and is compatible with various USB-powered devices, making it convenient for use in multiple scenarios. 4. Wide application: Suitable for computer fans, chassis cooling, automotive setups, and outdoor activities. 5. Designed for stable performance during operation. Specifications: Condition: Wire model: 2464-22AWG (17×0.16mm copper wire) Conductor material: Tinned copper Shell material: PVC Interface: USB-A male to 4-pin fan connector Color: Black Material: PVC and tinned copper wire Note: The actual product may have slight color variations due to lighting and display differences, which does not affect functionality. Package Contents: 1 × Adjustable speed chassis fan cable Please note: The above package includes only the listed item; other accessories are not included. Light reflection and screen settings may cause minor color differences between the image and the actual item. Measurement tolerance: ±1–3 cm. The converter and boost module supports up to 1.5A load. Ensure connected devices operate within 5–12V voltage range and do not exceed 1.5A current draw. When selecting, verify the fan cable has adequate current capacity and choose reliable products to ensure proper performance.