DescriptionIf you've been looking for a USB cooling fan for your router or set-top box, then your search is over! Our product is designed for prevent your products from excessing temperature. Three gears for you to adjust the of the fan, meeting your different needs.Features- Color: Black- Material: Plastic.- Size: About 8.00X8.00X4.60cm /3.14X3.14X1.81inch. - Rated speed: 1500r/min. -Motor power: 1.3-2.6W. -Rated voltage: 5V. -Current: 0.25A.- Made of premium material for durable and lasting use.- Provides cooling for modem, router, set-top box, chassis, and etc.- Brushless DC motor, high efficiency, energy saving and environmental protection.- Low noise fan blades, arc mechanical design, effeciently cooling your device.- A great cooling fan for home, school, dorm, store, and etc.