The ARCTIC S12038-4K is a 120mm server case fan designed for demanding applications and continuous operation. It features a dual ball bearing with brass housing for enhanced durability and resistance to heat and dust. The fan offers a wide speed range from 600 to 4000 RPM, controlled via PWM for precise airflow adjustment. It delivers a static pressure of 11.45 mmH2O and an airflow of 106 CFM (180 m³/h), making it suitable for heatsinks, radiators, and system ventilation in server environments. The fan operates at 12V DC with a current draw of 0.33A (operating) and 0.60A (maximum), and has a start-up voltage of 3.1V DC. It includes reverse polarity protection and a 300mm cable with a standard 4-pin connector, compatible with 2-pin and 3-pin headers. This fan is energy-efficient, consuming 12% less power than comparable competitors, and features active motor cooling for extended lifespan. Its black color and 120mm size make it a versatile cooling solution for workstations, servers, and industrial applications.