Thermaltake Mobilefan II 80mm External USB Case Fan Type: Case Fan Bearing Type: Sleeve RPM: 3000 ± 10% ~ 1300 ± 20% RPM Air Flow: 47.28 CFM Noise Level: 17 dBA at 1300 RPM 31 dBA at 3000 RPM Power Connector: USB 1.1/2.0 Color: Black Compatibility: Notebook & Desktop