The Delta Thermal / EMI / Solenoids part AFB0405MA-A is a high-quality DC Fan designed for efficient cooling in various electronic devices. With its compact size of 40 X 40 X 10mm, this axial ball bearing fan operates at 5V and can function within a voltage range of 4.5V to 5.5V. Boasting impressive airflow of 5.67CFM, this fan ensures efficient heat dissipation, keeping your devices running smoothly. Despite its powerful performance, it offers quiet operation, generating only 21.5dB of noise, ensuring a peaceful environment. Reliable and durable, the Delta Thermal / EMI / Solenoids part AFB0405MA-A is an excellent choice for many applications, including computers, servers, and other electronic equipment that require effective cooling.