Open Box Noctua Brown NF-A4x10 Premium Quiet Fan

The total volume of air that a product can move, expressed in cubic meters per hour (m³/h) or cubic feet per minute (CFM). It indicates the overall ventilation capacity and is useful for comparing cooling performance across fans, heat sinks, and HVAC units.

The linear measurement of a fan from front to back or top to bottom, expressed in a physical unit such as millimeters, centimeters, inches, etc. It indicates how deep the fan is and can be used for fitting, compatibility, or spatial planning.

The linear measurement across the widest part of a fan, expressed in units such as millimeters (mm), centimeters (cm) or inches (in). It represents the overall width of the fan and is useful for determining fit, compatibility with cases, and airflow characteristics.

The rotational speed of a fan expressed in revolutions per minute (RPM). This value indicates how fast the fan blades turn, which affects airflow and cooling performance for the component it serves.

A list of the operational states that an LED indicator on a device can display, such as power status, activity, link, or other functional signals. Each entry represents a distinct status that the LED may show when the device is in use.

Indicates whether the product allows manual adjustment of its operating speed, such as a fan or motor that can be set to different RPM levels by the user.

The material indicates the type of substance from which a product is made, such as metal, plastic, wood, glass, or composite materials. It helps users understand the product’s durability, weight, appearance, and suitability for specific applications.

Indicates whether the product includes Pulse‑Width Modulation (PWM) control for fan speed or other components, allowing variable speed adjustment via a controller.

The intensity of sound produced by a product, expressed in decibels (dB) or sones. It indicates how loud the device is during operation and helps users assess suitability for quiet environments.