The 40mm USB Fan by ELUTENG is a high-quality ventilator designed for use with laptops. With a maximum rotational speed of 5300 RPM and an air flow capacity of 4.4 cubic feet per minute, this fan effectively cools your device to keep it running optimally. Powered by a 5V source and weighing only 1.48 ounces, this fan is compact and easy to use, making it an essential addition to your computer setup. With a wattage of 5 watts and a noise level of 27 decibels, this metal fan is both efficient and quiet, providing a reliable cooling solution for your laptop.