Sabrent USB powered Slim Notebook Cooler with 3 80MM Fans (FAN-CLFN) 3 Built-in 80mm fans for maximum thermal heat dissipation. Compatible with USB 1.0 and USB 2.0 Built-in On/Off switch Plug and play, no external power supply is needed, no software installation is required 3-LED power indicators one year warranty, Air Flow: 30 CFM, 300 RPM Speed and 0.26A current