The CPU cooling fan cooler for Dell All In One Optiplex 7400 5490 0D7V9H is a black 4-pin fan designed specifically for Dell computers. It is made of plastic and operates at a voltage of 12 V. Manufactured in China, this CPU fan also comes with a manufacturer warranty of 3 months. Perfect for efficiently cooling your Dell All In One Optiplex 7400 5490 0D7V9H, this CPU cooling fan ensures optimal performance and longevity for your computer system.