The EEC0251B3-000U-G99 is a brushless DC fan produced by Sunon, a Taiwanese company specializing in cooling solutions. This fan is 50mm square and is rated at 12V DC and 0.25A. It has a speed of 5,000 RPM and an airflow of 3.92 CFM. It features two wires for power, a two-pin connector for control, and a Dual-ball bearing for long life and low noise. This fan is suitable for a wide range of applications, such as computer cases, electronics enclosures, and other cooling solutions.