AC Infinity Multifan Mini, Quiet AC-Powered Cooling Fan, 40mm

AC Infinity Multifan Mini Quiet AC-Powered Cooling Fan, 40mm Compact and energy-efficient USB fan designed various DIY cooling and ventilation projects.  Features a multi-speed controller to set the fan’s speed to optimal noise and airflow levels. Dual-ball bearings have a lifespan of 67,000 hours and allows the fans to be laid flat or stand upright. USB plug can power the fan through USB ports found behind electronics and on portable power banks. Dimensions: 1.6 x 1.6 x 0.8 in. | Airflow: 12 CFM | Noise: 18 dBA| Bearings: Dual Ball Product Description The small cooling fan can be positioned to stand upright or laid flat to cool various electronics and ventilate DIY projects. Features a multi-speed controller with power switch. Includes anti-vibration rubber feet and a 6-foot power cord. The low power-consumption fan be be powered by USB ports found behind popular electronics and on portable power banks. Each unit contains an additional USB port, up to four fans can be daisy chained