USB 2 Quiet Fans Notebook Laptop Cooler Cooling Pad (1) Air Flow: 28CFM,(2) Speed: 1500 rpm,(3) Noise Level: 25dBA (4) Rated Voltage: DC 3V (5) Power Consumption: &lt; 0.9W (6) Rated Current: &lt; 180mA (7) Fan: 80x80x10mm ( LXWXH) (8) M.T.B.F: 20,000 Hours (9) Dimensions: 300 x 230 x 13.8 mm( LXWXH) (10) USB power (11) Working in any Operating System