Features: The 7530 USB adjustable speed blower delivers targeted airflows for efficient cooling, featuring a 3700RPM motor and 75x30mm compact design for printers, PCs, and electronic cabinets. Equipped with a 1.5m USB cable, 5V/2A power input, and integrated speed controller, this plastic built cooling fan ensures hassle less installation and precise airflows adjustment via its on/off switches. Ideal for diyer enthusiasts, IT professional, and makers seeking reliabled thermal management for high performances devices like routers, amplifiers, or printing setups. Optimize airflows in confined spaces such as data centers, workshops, or outdoor scenarios like forging ignitions and BBQ combustion support. Engineered for versatility, this USB powered blower combines industrial grade cooling capacity with plug play simplicities, making it a must have for electronics maintenance and heat sensitive projects. Specifications: Composition: plastic Color:Black USB input: 5V 2A Length：Approx7.5cm/2.95inch Width:Approx.7.5cm/2.95inch Thickness:Approx.3cm/1.18inch Air duct diameter:Approx.2.7cm/1.06inch Rotation speed: 3700rpm Package Includes: 1 Set Adjustable Cooling Fan note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.