Cooler Master R9-NBC-NPL1-GP, Fan Speed 1400 RPM ± 15%, Fan Airflow 70 CFM ± 10%, Fan Noise Level 21 dBA, Power USB 5V DC, Current Consumption 0.38A, Compatibility Supports 7"~15.4" notebook (up to 17"). 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.