Fangrui Product Details 1. Ice Coorel Usb Laptop Radiator Computer Mute Cooling Bracket, Colour: N9 Standard Version (silver) 2. Features: 3. Twin Turbo Fan Design, Strong Heat Dissipation 4. Convection Air Inlet Design, Large Area At The Bottom Of The Air, With 2mm Large Mesh, Smooth Ventilation 5. Dual Usb Output Ports, Plug And Play, Do Not Occupy The Interface Of The Laptop 6. Five Levels Of Height Adjustment To Meet Different Needs And Protect The Cervical Spine 7. Suitable For Laptops Within 21 Inches 8. Product Parameters: 9. Material: Aluminum Alloy + Plastic 10. Interface: Usb X 2 11. Rated Current: 800ma 12. Rated Power: 4w 13. Rated Voltage: Dc 5v 14. Working Current: 1.1a 15. Working Power: 5.5w 16. Speed Regulation: Six-speed Wind Speed Regulation 17. Fan Speed: 1150rpm 18. Fan Size: 14 X 1.5 Cm 19. Cable Length: 0.7 Meters 20. Product Size: 46.1 X 29.4 X 5.2 Cm 21. Product Weight: About 1680 Grams