Features: Elevates PC performances with 8W DC12V Cooling Fan Speed Controls, solution for precise fan speed adjustments and thermals management. This innovative adapter features USB connectivitys for power access, 4pin compatibility, and adjustable Voltages step up from 5V to 12V, ensuring broad fan compatibility and enhances cooling efficiency. for enthusiasts and computer builders, this fan speed controller is for anyone to customize their cooling systems for improved stability and longevitys. Whether you're overclocking for gaming or running intensive applications, maintain your systems cool with this and user friendly fan speed Controls in any desktop. included 2/3 way splitter cable, the fan controller seamlessly integrates into PC build, providing environment and airflows management. Specifications: Materials: Plastic Size:4.5x2.2x1.8cm Styles: 1 to 2 line, 1 to 3 line, standard version(optional) Package Includes: 1PC Fan Speed Controller note: Please allow 1-2cm errors due to manual measurement, make sure that you not mind before order. Due to the differences between different monitors, the picture may not reflect the actual of the item.