Size: 6*6*4cm / 2.34"*2.34"*1.56"Color: Black1. Safe and Reliable: The Fan Control Cable has three gear adjustments that can accurately adjust the fan speed, ensuring stable fan operation and reducing the risk of malfunctions.2. Convenient and Easy to Use: The operation is simple, without requiring additional tools or power sources, making it easy to adjust the fan speed.3. Energy-saving and Environmentally Friendly: By controlling the fan speed, it can effectively reduce energy consumption, save energy, and achieve the purpose of environmental protection and energy conservation.4. Multi-functional Application: It is not only suitable for computer fans, but can also be used for controlling the fan speed of other household appliances, improving the user experience.5. Beautiful and Practical: The design is simple and generous, and the appearance is both beautiful and practical. It is also compatible with fan wires, making it more comfortable to use.Package includes: 1* USB Fan Speed Controller.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin