Features: Adjustment speed mode: This PC cooling fan is designed with adjustment speed mode, which is regulated by the controllers to provide concentrated airflows and effective heat dissipation. Easy to install: This computer case comes with a fan and a 1.5meter-long USB cable, making it easy to install and connect to your electronic devices. USB5V2A power supply with switches, perfect for placing electronic devices and components in cabinets or rack with limited clearance height. USB power supply: This computer cooling fan is powered by the USB interfaces of your electronic device or adapter, car, mobile power, and other standard USB ports. Ideal for DIY enthusiasts, blacksmiths, and electronics technicians requiring reliable thermal management in workshops, kitchens, or equipment rack. Specifications: Component: Plastic USB input: 5V2A Size: approximately 19.3cm/7.6'' long, 7.5cm/2.95'' wide, 3cm/1.18'' thick Air pipe diameter: approximately 2.8cm/1.10 inch Speed: 3700rpm Package Includes: 1Piece 7530 blower 1Piece USB Speed Control Cable 1Piece Metal Air Duct note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.