The Cooler Master Mobius 120mm Case Fan is a high-quality non-RGB fan designed for computer cases. With a fan diameter of 120mm and a maximum fan speed of 2400 RPM, this fan can efficiently dissipate heat and improve airflow within your system. The dynamic bearing ensures smooth operation, while the 4-pin power connection allows for easy installation. The sleek black color adds a stylish touch to your setup, making it a reliable choice for cooling your computer system. This fan came with my CPU cooler and since I just built a new gaming PC I needed it to be an RGB version. So I switched the NON-RGB version for the RGB version. These fans are super quiet and they move an incredible amount of air so they are a superior choice for a PC fan. They are a top of the line offering from COOLERMASTER and I highly recommend it . I paid 35.00 for the RGB version and I am asking a lot less for this one. For someone who does not require the RGB version it’s an absolute bargain of a fan .