Easy Installation: This computer case fan with long enough USB cable can be easily installed and connected to your electronic devices. Wide 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. USB 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. 3 Speed Mode: This PC cooling fan is designed with 3 speed modes adjusted by controller, providing concentrated airflow for effective heat dissipation. 97mm / 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.