This compact 3cm USB-powered cooling fan provides instant airflow to prevent electronics from overheating. Simply plug it into any USB port for immediate cooling, or cut off the USB connector to wire it directly to a 5V power source.

The fan includes front and back protective grills along with mounting hardware for secure installation in enclosures and project cases.

Key Features

• USB Powered – Plug into any USB port for instant cooling
• Direct 5V Wiring – Cut the USB connector to wire directly to a 5V supply
• Fan Size – 3cm (30mm) square
• Mounting Hardware – Includes screws and nuts
• Protective Grills – Front and back grills included

Speed Control

While there is no dedicated PWM or feedback pin, you can regulate fan speed using a motor controller, H-Bridge, or MOSFET. Since fans are inductive loads, a flyback diode is recommended to protect your circuitry.

Ideal For

• Cooling small computers and single-board computers
• FPGA and motor driver heat management
• Enclosed project cases and 3D-printed housings
• Any heat-sensitive electronics requiring active cooling

Package Contents

• 1× 5V Square USB Fan (3cm)
• 1× Front protective grill
• 1× Back protective grill
• Mounting screws and nuts