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 Fan Material: PBT Input Port: USB Voltage: DC 5V Rotate Speed: 3800RPM Fan Size: Approx. 97 x 97 x 33mm / 3.8 x 3.8 x 1.2in (Manual Measurement, Slight Error May Exist ) Air Inlet Size: Approx. 60mm / 2.36in (Manual Measurement, Slight Error May Exist ) 1 x PC Cooling Fan