Specifications Model R9-NBC-NPL1-GP Material Plastic, Metal Mesh, Rubber Weight 720 g Dimension 390 x 310 x 20~47 mm Fan Dimension (W / H / D) 160 x 160 x 15 mm fan Fan Speed 1400 +-15% R.P.M. Fan Speed Adjustment Single speed Fan Airflow 70 CFM Fan Noise Level (dB-A) 21 dBA Power USB 5V DC Power consumption 0.38A, 1W Compatibility... more Support all 17” and smaller laptops Features - Ultra slim and lightweight design for easy carrying. - Ergonomic design for best viewing/typing angle. - 160 mm silent fan with superior airflow provides best cooling performance. - Full range metal mesh and aerodynamic design air intakes. - USB port extender design keeps your USB ports intact. - Cable grooves for easy USB cable management. - Compatible with all 17” and smaller laptops.