This ELUTENG USB powered cooling fan features a 140mm design with three adjustable speed settings to meet various cooling requirements. The fan utilizes a hydraulic bearing system for quiet and durable operation, enclosed in a protective metal grille for enhanced safety and longevity. Powered directly through USB connection (5V), it requires no additional power supply and works seamlessly with computers, power banks, and USB chargers. The high-airflow design effectively dissipates heat to prevent overheating, lag, and system crashes. Dimensions: 140mm fan diameter. Compatible with a wide range of devices including routers, receivers, TV boxes, DVRs, gaming consoles (Xbox, PS4, PS5), VR devices, amplifiers, and computer cases. The compact and lightweight construction makes it easy to install and position for optimal cooling performance.