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AC Infinity Multifan Mini USB Axial Fan
The AC Infinity Multifan Mini USB Axial Fan is the smallest member of the Multifan family, a 40 mm USB-powered fan built for the spaces nothing else in the range can enter: controller housings, LED driver boxes, router shelves and other ventilated electronics enclosures. Where the AC Infinity Multifan USB Axial Fan starts at an 80 mm frame, the Mini's 4.0 x 4.0 x 2.0 cm (1.6 x 1.6 x 0.8 in) body slips beside heatsinks and between components, putting moving air directly onto hot electronics that would otherwise sit in still air.
The Mini makes up for its size with speed. A 40 mm impeller riding on dual ball bearings spins at 6000 RPM, several times faster than the larger axial models, and generates 4.2 mm H2O of static pressure - the highest figure in the entire Multifan family. That pressure is what makes a tiny fan genuinely useful: it drives its 20 m³/h (12 CFM) through grille openings, vent slots and cramped internal passages where the output of a bigger, slower fan would stall against the restriction. The bearings carry a 67,000 hour L10 rated life, the motor draws 0.6 W (0.12 A) from any 5 V DC USB port rated 500 mA or higher, and AC Infinity rates the noise at 18 dBA. A 132 cm (4 ft) cord runs from the USB plug to an inline three-speed controller, with a 65 cm (2 ft) length from controller to fan, while detachable anti-vibration silicone feet let the unit lie flat or stand upright; mounting holes spaced 3.2 cm (1.26 in) apart accept screws for permanent installation.
A built-in USB port on the fan body chains up to four fans from one power source, with downstream units following the controller closest to the supply. The Mini operates from -18 to 70°C (0 to 158°F) and 35 to 85% relative humidity, mounts in any orientation, and flips over to draw air away from a component instead of blowing onto it. It is an electronics-cooling fan rather than a room circulator - for moving air across shelves or around a tent, the larger frames and the low-profile AC Infinity Multifan USB Centrifugal Blower take over. Sold as a single 40 mm unit. Its high-pressure airflow clears heat out of ventilated housings through the vent slots the enclosure already has, with no wiring beyond a spare USB port.
NOTE: USB fans are ineffective in fully sealed enclosures - air must be able to flow in and out of the space through vents or openings. Multifan units are not designed for outdoor use, filter attachment or through-wall mounting, and splicing or hardwiring the USB cords voids the warranty.
A 40 mm USB fan spinning at 6000 RPM, delivering the highest static pressure in the Multifan family on just 0.6 W.
Fits Tiny Spaces
A 40 mm frame slips into controller boxes, driver housings and gaps larger fans cannot enter.
Pushes Through Restriction
High-pressure airflow clears heat through vent slots and grilles where slower fans stall.
Sips USB Power
Draws 0.6 W from any USB port rated 500 mA or higher.
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2 Years warranty · 30-day returns
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AC Infinity Multifan Mini USB Axial Fan
Key Highlights
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Key Highlights
- Frame measures just 4.0 x 4.0 x 2.0 cm (1.6 x 1.6 x 0.8 in), the smallest fan in the Multifan range
- Static pressure of 4.2 mm H2O is the highest in the Multifan family, larger axials included
- Moves 20 m³/h (12 CFM) at 6000 RPM with manufacturer-rated noise of 18 dBA
- Built-in USB port chains up to four fans from one power source
- Mounting holes at 3.2 cm (1.26 in) spacing take screws for fixed installation inside enclosures
- Dual ball bearings rated for a 67,000 hour L10 lifespan
- Lies flat or stands upright on detachable anti-vibration silicone feet
Directions for Use
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Directions for Use
- Stand the fan upright or lie it flat on its anti-vibration feet inside the enclosure, facing the component to be cooled, or remove the feet and screw the frame in place through the mounting holes spaced 3.2 cm (1.26 in) apart.
- Check the enclosure has openings for air to enter and leave; the fan cannot cool a fully sealed box.
- Flip the fan over to switch between blowing onto the component and drawing air away from it.
- Plug the USB connector into a dedicated port rated 500 mA or higher.
- Select low, medium or high on the inline controller; the same switch turns the fan off.
- To run several fans from one port, daisy-chain up to four units through the USB port on the fan body and set the chained fans to high.
- Note that some electronics keep their USB ports live when switched off; the fan continues running unless its controller is set to off.
Technical Specifications
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Technical Specifications
- Product Model AI-MPF40A
- UPC Code 819137020559
- Fan Type 40 mm axial, single unit
- Airflow 20 m³/h (12 CFM)
- Noise Level 18 dBA
- Fan Speed 6000 RPM
- Static Pressure 4.2 mm H2O
- Power 0.6 W (0.12 A)
- Power Input USB, 5 V DC (operating range 3 to 7 V DC); requires a port rated 500 mA or higher
- Speed Controller inline 3-speed (off / low / medium / high)
- Daisy-Chaining built-in USB port; up to four fans per USB power source
- Bearings dual ball bearings, 67,000 hour L10 rated life
- Frame Dimensions 4.0 x 4.0 x 2.0 cm (1.6 x 1.6 x 0.8 in)
- Dimensions with Feet 4.5 x 4.5 x 2.0 cm
- Mounting Hole Spacing 3.2 cm (1.26 in)
- Cord Lengths 132 cm (4 ft) USB plug to controller; 65 cm (2 ft) controller to fan
- Feet detachable anti-vibration silicone feet
- Mounting horizontal or vertical; reverse the fan for intake or exhaust
- Operating Environment -18 to 70°C (0 to 158°F), 35 to 85% RH
- Certifications UL cUL Recognized E503903 (fan unit, UL-507), CE, RoHS
- Warranty 2 Years
Resources
Shipping & Returns
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Shipping & Returns
Check delivery options for the currently selected item and quantity.
Estimate is for this item and quantity only. Final whole-order freight is confirmed at checkout.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at info@hydrooasis.com.au
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at info@hydrooasis.com.au.
Size: 40 mm
