Noctua NF-A4x20 5V PWM | 40mm Case Fan

The Noctua NF-A4x20 5V PWM 40mm Case Fan optimizes airflow while maintaining exceptional acoustic efficiency. Equipped with a self-stabilizing oil-pressure bearing, it ensures long-lasting operation and reduced friction noise.

Perfect for compact builds, this fan features Noctua’s advanced PWM IC for dynamic speed control, adapting its speed to the system's cooling demands effortlessly. Its low noise adaptor further reduces sound levels, ensuring silent performance.

The fan’s reduced motor hub size and Stepped Inlet Design create more space for airflow, greatly improving cooling efficiency. The sleek SSO2 bearing enhances durability, allowing seamless operation, likened to the calmness of a whisper in a library.

With a maximum rotational speed of 5000 RPM and an operating voltage of 5V, it integrates seamlessly into various electronic cooling applications, offering a finely tuned balance of performance and tranquility.