Specifications: The computer case cooler has colorful LED light, which makes your computer cool and stylish. Type B can be operated by remote controller, which is convenient to use. It has a high performance of heat dissipation. Item Name: Computer Case Cooling Fan Material: ABS Type: A: 1 x RGB Cooling Fan B: 3 x RGB Cooling Fans, 1 x Controller, 1 x Remote Controller Bearing Type: Hydrablic Speed: 0-1400RPM Noise Value: 25DBA±10% Service Life: 40000 Hours Rated Voltage: 5V DC 12V DC Air Volume: 37.8CFM±10% Fan Connector: Small 6pin Remote Controller Battery: 1 x CR2025 Button Battery (Not Included) Features: Remote Control, RGB Light, Heat Dissipation Cable Length: 480mm±10mm/18.9" ± 0.39" (Approx.) Size: 120mm x 120mm x 25mm/4.72" x 4.72" x 0.98" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. A single RGB fan (used to install and expand) needs to be used with our store's controller, and cannot be used individually The fan is a small 6pin interface, and the controller is powered by a large 4Pin interface. You can only plug in the desktop power supply and use the large 4Pin to get power. You cannot use other devices to supply power. Package Includes: 1 x RGB Cooling Fan or 3 x RGB Cooling Fans 1 x Controller 1 x Remote Controller