Feature:1. This is a computer cooling fans especially designed fo FL5500L F554L R556L VM510L VM890L R555LD X554L.2. Adopting 4 pin power connector to improve the powerful heat dissipation function and reduce the temperature during continuous operating.3. Made of premium aluminum alloy material, the cooling fans are high durability, which means you can use them for a long time.4. With easy installation, this cooling fan is very easy to operate and use, just plug the connector to corresponding port and use it.5. With great design, excellent structure and wide compatibility, making this fan very attractive and special compared with others.Specification:Item Type: Computer FanMaterial: Aluminum AlloyPower Connection: 4 PinVoltage: DC5V.Package List:1 xComputer FanNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.