The Nidec 4-Pack Cooling Fans are designed for universal compatibility with a 3-pin power connection and a voltage of 12V DC. With a fan diameter of 70mm and a sleeve bearing type, these case fans provide efficient cooling for computer systems. The black plastic fans come in a blister pack packaging and feature a sleek black color. Ideal for improving the performance and longevity of your computer system, these cooling fans are a reliable choice for maintaining optimal temperature levels.