Built with a rugged ABS housing, this multifunctional duct fan delivers 5500 RPM airflow for professional-grade ventilation while maintaining portability for mobile applications USB adjustable speed detachable blower features 5500 RPM 75mm duct design for efficient heat dissipation, smog exhaust, and combustion aids, providing a removable fan unit that is easy to clean and maintain Designed for crafters, electronics, and blacksmiths who require precise airflow control in equipment racks, printers and ventilation systems With a 12V input port and a USB 5V boost speed control cable, this compact blower supports power from a USB adapter or portable charger and reliably reduces installation hassle in limited space Optimizes heat management in your workshop, server cabinet, or outdoor barbecue setup with concentrated air system that increases cooling efficiency and smog removal efficiency, Manufacturer: Rxgiasup