1. Voltage conversion: This fan cable can convert 5V USB power to 12V voltage, providing the required power for the 12V fan. 2. Speed adjustment function: The built-in speed adjustment switch can adjust the working speed of the fan, usually with three gears:Low speed: suitable for quiet environment, providing soft air volume.Medium speed: suitable for general needs, providing moderate air volume.High speed: suitable for high temperature environment, providing strong wind force. 3. Easy to connect: connected through the USB interface, compatible with various USB power devices, convenient for use in different occasions. 4. Wide application: suitable for computer fans, chassis cooling, cars, outdoor activities and other scenarios. 5. Safety: usually adopts safety design to ensure stability and safety during connection and use.<br><br>Specifications: Condition: Brand new and Wire model: 2464- 22AWG (17x0.16MM copper wire) Conductor material: tinned copper Shell material: PVC Interface: USB A male/fan 4PIN Notes: When choosing, make sure the fan cable has sufficient current carrying capacity, and pay attention to purchasing reliable brand products to ensure performance and safety. The converter and boost module is designed to load 1.5A. Please make sure that the voltage of the device you want to connect is between 5-12V and the current does not exceed 1.5A. Colour:black Material:PVC+tinned copper wire The actual product may have slight color difference or difference, which will not affect the use<br><br>Package Contents: 1 * Adjustable speed chassis fan cable<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.