Feature:1. Compatible Models: Laptop cooling fan is designed for DELL OptiPlex 3020M 3040 3046M 3050 7040M 7050M 9020M and is the perfect replacement for damaged parts of your mainframe computer.2. 4 Pin Power Connector: Replacement laptop cooling fan with 4pin power connector to enhance heat dissipation and reduce temperature during continuous operation3. Premium Material: Cooling fan is made of premium aluminum alloy and ABS material, which is strong and durable, not easy to damage and long life.4. Increase Efficiency: Laptop cooling fan can help reduce the burden of the computer host and increase the efficiency of the host.5. Easy to Operate and Install: Replacement laptop cooling fan is easy to connect, easy to operate, easy to use, easy to install and remove.Specification:Item Type: Replacement Laptop Cooling FanMaterial: Aluminum Alloy, ABSPower Connection: 4 PinInput: DC 5V 1AApplicable Models: For DELL OptiPlex 3020M 3040 3046M 3050 7040M 7050M 9020M.Package List:1 x CPU Cooling Fan