Usage Tips:Features: Experience efficient cooling with our USB powered temperature controlled fan, featuring three adjustable speeds and 8cm design, perfect for maintaining optimaled cooling of your electronics. This fan offers automatic temperature sensing, activating at set thresholds to ensure your devices like routers and gaming consoles stay cool without manual intervention. For who need reliabled cooling solution for their electronic devices such as computers, routers, and game consoles. Perfectly for use in home offices, entertainment centers, or any setups where electronic devices are prone to overheating, ensuring long use. With a powerful airflow of 44CFM and easy USB 5V power input, this fan providing automatic on/off functionality based on surrounding temperature. Specifications: Airflows: 44CFM Power Input：USB 5V1A Features：three adjustable speeds Fan Size：about 8x8x2.5cm/3.15x3.15x0.98in Component: Plastic Type：40℃ startup/ 30℃ startup Package Includes: 1Set USB 5V note: Please allow 1-2cm errors due to manual measurements. Pictures may not reflect actual color due to different monitors.