Go to Amazon Sites : br br Superbpag 5 Blue Backlit USB Powered Cooler Pad 17 Laptop Cooling Fan Pad with Adjustable Laptop br br 5 Built-in silent fansMain120x120x25mmanother four70x70x15mmwith LEDs for maximum thermal heat dissipation br The large 120mm fans provide superior airflow at whisper quiet noise levels spinning at just over 1000 RPM The Superbpag 156-17 laptop cooler provides a strong 7435 CFM of air flow allowing you to work all day without making any noise and interrupting your flow br Ergonomic designed 6 gear adjustable gradient for easy typing br Extra USB port and power switch design Built-in dual-USB hub allows for connecting more USB devices br The fans quietly whir the heat away from your laptop at a rate of 1000-10 RPM Main about 2000-10 RPM and adjustable producing 70-10 CFM of airflow