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 computer cooling fan is powered by USB interface of your electronic devices or adapter, car charger, power bank and other standard USB port. 33 Speed Mode: This PC cooling fan is designed with 3 speed modes adjusted by controller, providing concentrated airflow for effective heat dissipation. 4Easy Installation: This computer case fan with long enough USB cable can be easily installed and connected to your electronic devices. 5Wide Application: This PC case fan provides up to 3800 RPM and 22 CFM is suitable for DIY inflating, modem, router, receiver, amplifier, PoE switcher, DVR, TV, AV cabinet, data center, and storage device.Item Type: USB Blower FanMaterial: PBTInput Port: USBVoltage: DC 5VRotate Speed: 3800RPMFan 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 )Fan Speed Adjustment: 3 Speed Mode(High, Medium, Low) .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 USB Blower Fan1 x Nozzle