Enhance the performance of your Dell Optiplex 790 or 990 Sff computer with this high-quality CPU heatsink and fan set. Designed to keep your computer's processor cool and prevent overheating, this fan set is perfect for anyone who wants to get the most out of their computer. The fan operates quietly and efficiently, ensuring that your computer runs smoothly and without interruptions. With a 5-pin power connexion and a voltage of 12V, this fan set is easy to install and use. The black color and sleek design of the fan make it a stylish addition to your computer. Plus, with its durable construction and reliable performance, this fan set is sure to keep your computer running smoothly for years to come.