Feature 197mm / 3.8in High: This PC cooling fan with 97mm/3.8in height is ideal for electronics and components positioned in a cabinet or rack with a limited clearance height. 2USB Powered: This CPU cooling fan is powered by USB interface of your electronic devices or adapter, car charger, power bank and other standard USB port. 3Concentrated Airflow: This CPU cooling fan with 3800 RPM and 22 CFM is able to create more concentrated airflow to provide fast and highly effective heat dissipation. 4Easy Installation: This computer case fan with long enough USB cable can be easily installed and connected to your electronic devices. 5Durable Material: This computer cooling fan is made of durable PBT and adopts DC 5V brushless motor, which ensures stable performance and long durability.Item Type: PC Cooling FanMaterial: PBTInput Port: USBVoltage:DC5VRotate Speed: 3800RPMFan Size: Approx. 97 x 97 x 33mm / 3.8 x 3.8 x 1.2in (Manual Measurement, Slight Error May Exist )AirInlet Size: Approx. 60mm / 2.36in(Manual Measurement, Slight Error May Exist ) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x PC Cooling Fan