AC Infinity MULTIFAN Mini USB Cooling Fan - 40mm

Brand: AC Infinity
Product Code: ACI-MPF40A
Warranty: 2 Years
AC Infinity
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AC Infinity MULTIFAN Mini

The small cooling fan can be positioned to stand upright or laid flat to cool various electronics and ventilate DIY projects. Features a multi-speed controller with power switch. Includes anti-vibration rubber feet and a 6-foot power cord. The low power-consumption fan be be powered by USB ports found behind popular electronics and on portable power banks. Each unit contains an additional USB port, up to four fans can be daisy chained together to share the same power source. This fan system is CE and RoHS certified and contains premium dual-ball bearings, allowing it to be mounted horizontally or vertically.

Key Features

  • Compact and energy-efficient USB fan designed various DIY cooling and ventilation projects
  • Features a multi-speed controller to set the fan’s speed to optimal noise and airflow levels
  • Dual-ball bearings have a lifespan of 67,000 hours and allows the fans to be laid flat or stand upright
  • USB plug can power the fan through USB ports found behind electronics and on portable power banks
  • Dimensions: 1.6 x 1.6 x 0.8 in
  • Airflow: 12 CFM
  • Noise: 18 dBA
  • Bearings: Dual Ball

Speed Controller

The fan includes an in-line multi-speed controller with power switch to set the fan’s speed to optimal noise and airflow levels for various environments.

Connecting Additional Units

For applications that requires more airflow, each fan unit can daisy chain additional MULTIFAN S series fans. Up to four fans can share the same USB power source; and up to six fans can share the same thermal controller (sold separately). MULTIFAN S1, S2, S3, S4, and Mini contains one fan, and MULTIFAN S5 and S7 contains two fans.


This small and energy-efficient cooling fan is popular in various cooling and ventilation applications including video game consoles, cosplay, helmets, virtual reality gear, aquarium, Roku, router, raspberry pi, and other DIY projects.

Product Dimensions
Total Dimensions 40 x 40 x 20 mm (1.6 x 1.6 x 0.8 in.)
Hole to Hole Distance 3.2 x 3.2 cm (1.26 x 1.26 in.)
Screw Hole Size Ø 0.35 cm (Ø 0.1 in.)
Cord Length 183 cm (6 Feet)
Product Performance and Technical Specs
Total Airflow 12 CFM
Total Noise 18 dBA
Speed 6,000 RPM
Operating Voltage 3 to 7 V DC
Power 0.6 W
Current 0.12 A
Static Pressure 4.2 mm-H2O
Operating Humidity 35 to 85% RH
Operating Temperature 0 to 158°F
Fan Bearings Dual Ball
Mounting Positions Horizontal or Vertical
L10 Life Expectancy 67,000 Hours
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