ICE COOREL USB Laptop Radiator Computer Mute Cooling Bracket, Colour: N9 Standard Version (Silver) Features: 1. Twin turbo fan design, strong heat dissipation 2. Convection air inlet design, large area at the bottom of the air, with 2mm large mesh, smooth ventilation 3. Dual USB output ports, plug and play, do not occupy the interface of the laptop 4. Five levels of height adjustment to meet different needs and protect the cervical spine 5. Suitable for laptops within 21 inches Product parameters: 1. Material: aluminum alloy + plastic 2. Interface: USB x 2 3. Rated current: 800MA 4. Rated power: 4W 5. Rated voltage: DC 5V 6. Working current: 1.1A 7. Working power: 5.5W 8. Speed ??regulation: six-speed wind speed regulation 9. Fan speed: 1150rpm 10. Fan size: 14 x 1.5 cm 11. Cable length: 0.7 meters 12. Product size: 46.1 x 29.4 x 5.2 cm 13. Product weight: about 1680 grams