The Sabrent FAN-NTP3 USB-Powered 3-Fan Notebook Cooler keeps your notebook cool. It features three (3) built-in 60mm fans for easy thermal heat dissipation, keeping your notebook from getting too hot. The fans quietly whir the heat away from your laptop at a rate of 300 RPM, producing 30 CFM of airflow. Hot air is sucked in from the bottom of the laptop and exhausted through the bottom. It is powered by connecting to a single USB port, and it is equipped with an On/Off Switch, plus 3 LED's indicate working status of the 3 fans.