3.5 Inch EC9225 EC Axial Fan https://www.mx-fan.com/product/92x92mm-ec-axial-fan/92-92-25mm-3-5-inch-ec9225-ec-axial-fan.html The EC9225 fan is powered by an electronically commutated (EC) motor, which provides several benefits. EC motors are known for their energy efficiency, consuming less power compared to traditional AC motors. This not only reduces energy consumption but also results in lower operating costs.