Specification : Model R9-NBC-NPL1-GP Materials Plastic, Metal Mesh, Rubber Weight 720 g Dimension 390 x 310 x 20~47 mm Fan Dimension 160 x 160 x 15 mm fan (W / H / D) Fan Speed 1400 ±15% R.P.M. Fan Speed Adjustment Single speed Fan Airflow 70 CFM Fan Noise Level 21 dBA Power USB 5V DC Power Consumption 0.38A, 1W Compatibility Support all 17" and smaller laptops