AC Infinity MULTIFAN S3, Quiet 120mm USB Fan, UL-Certified for Receiver DVR Playstation Xbox Computer Cabinet Cooling
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Shipping & Fee Details
| Price | $13.99 | |
| AmazonGlobal Shipping | $12.31 | |
| Estimated Import Fees Deposit | $0.00 | |
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| Total | $26.30 | |
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Save 15% on AC Infinity, Thermal Trigger for USB Fans when you purchase 1 or more MULTIFAN Series Fans offered by AC Infinity. Shop items
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Save 10% on AC Infinity, Turbo Adapter for USB Fans when you purchase 1 or more MULTIFAN Series Fans offered by AC Infinity. Shop items
Purchase options and add-ons
| Product Dimensions | 4.7"L x 1"W x 4.7"H |
| Brand | AC Infinity |
| Voltage | 5 Volts |
| Wattage | 5 watts |
| Cooling Method | Air |
| Compatible Devices | Amplifier |
| Noise Level | 18 dB |
| Material | Rubber |
| Maximum Rotational Speed | 1300 RPM |
| Air Flow Capacity | 52 Cubic Feet Per Minute |
About this item
- Ultra-quiet UL-certified USB fan designed to cool various electronics and components.
- 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 popular AV electronics and game consoles.
- Fan Size: 4.7 x 4.7 x 1 in. | Airflow: 52 CFM | Noise: 18 dBA | Bearings: Dual Ball
Frequently bought together

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Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 4.7 x 1 x 4.7 inches; 0.32 ounces
- Item model number : FBA_AI-MPF120A
- Date First Available : October 18, 2013
- Manufacturer : AC Infinity
- ASIN : B00G05A2MU
- Best Sellers Rank: #29 in Computer Case Fans
- Customer Reviews:
Top Brand: AC Infinity
From the brand
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AC Infinity is a technology company that specializes in environmental controls for audio/video and HVAC. The company was founded on the principle of working closely with customers to develop great products. Dependable service and a commitment to product quality are the foundations of the business's values.
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Product Description
MULTIFAN Series
Designed to quietly cool Xboxs, Playstations, Rokus, Apple TVs, receivers, modems, routers, DVRs, computers, and other audio video electronics.
Key Features
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Multi-Speed ControllerInline switch enables you to optimize fan speed for various applications. Can be powered through USB ports found behind AV electronics and consoles. |
Ultra-Quiet FansDesigned to maximize airflow CFM to noise dBA ratio. Dual-ball bearings rated at 67,000 hours allows the fans to be laid flat or stand upright. |
Quality ApprovedContains UL recognized axial fans under #E503903 in 2018 by Underwriter Laboratories. Archived in UL Online Certifications Directory. |
Silicone Rubber FeetAbsorbs noise and surface friction caused by fan vibrations. Unused pieces can be detached to reduce overall height for tight spaces. |
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| AC Infinity, MULTIFAN S1 Quiet USB Cooling Fan | AC Infinity, MULTIFAN S3 Quiet USB Cooling Fan | AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan | AC Infinity, MULTIFAN S5 Quiet USB Cooling Fan | AC Infinity, MULTIFAN S7 Quiet USB Cooling Fan | AC Infinity, MULTIFAN S2 Quiet USB Cooling Blower | |
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| Customer Reviews |
4.7 out of 5 stars
5,718
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4.7 out of 5 stars
5,846
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4.7 out of 5 stars
3,045
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4.7 out of 5 stars
10,107
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4.7 out of 5 stars
7,642
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4.7 out of 5 stars
1,418
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| Price | $11.99$11.99 | $13.99$13.99 | $15.99$15.99 | $15.99$15.99 | $19.99$19.99 | $16.99$16.99 |
| Model | AI-MPF80A | AI-MPF120A | AI-MPF140A | AI-MPF80A2 | AI-MPF120A2 | AI-MPB140A |
| Dimensions | 80x80x25 mm | 120x120x25 mm | 140x140x25 mm | 80x80x25 mm (x2) | 120x120x25 mm (x2) | 120x120x25 mm |
| Airflow | 26 CFM | 52 CFM | 57 CFM | 52 CFM | 104 CFM | 35 CFM |
| Noise | 17 dBA | 18 dBA | 18 dBA | 18 dBA | 19 dBA | 17 dBA |
| Multi-Speed Controller with Power Switch | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Dual Ball Bearings at up to 67,000 Hrs | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Axial Fans Meet UL-507 Standards in 2018 for Safety (Underwriters Laboratories #E503903) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| USB Plug with 6-foot Power Cord | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Compatible with Turbo Wall Adapter (Sold Separately) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Applications (Can by laid flat or stand upright) | Receiver, DVR, Router, Modem, Xbox, Playstation, and other Audio Video electronics | Receiver, DVR, Router, Modem, Xbox, Playstation, and other Audio Video electronics | Receiver, DVR, Router, Modem, Xbox, Playstation, and other Audio Video electronics | Receiver, DVR, Router, Modem, Xbox, Playstation, and other Audio Video electronics | Receiver, DVR, Router, Modem, Xbox, Playstation, and other Audio Video electronics | Receiver, DVR, Amplifier, Router, Modem, and other Audio Video electronics |
Product guides and documents
Videos
Videos for this product

0:47
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Customer Review: These fans are perfect!
Deborah Windham

Videos for this product

6:47
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AC Infinity Multifan S3 Ultra Quiet Cooling Solution
BloomingFressia

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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the quality, performance, adjustability, temperature control, noise level and value of the electronic component fan. For example, they mention it's a strong fan that built well, works great, has a three speed switch and is extremely quiet. They're also happy with connectivity, air flow, and value.
AI-generated from the text of customer reviews
Customers like the noise level of the electronic component fan. They mention that it's extremely quiet and has an RPM adjustment switch to reduce vibration noise.
"...120mm had a nice balance for cooling and low noise. So far, I am happy with this newer model fan...." Read more
"...I used dab of silicone on the 4 feet and it seems to work fine. Totally quiet...." Read more
"...Both fans run exceptionally quiet, and I needed to check occasionally to reassure myself they were still spinning...." Read more
"...I wanted an external fan that was extremely quiet, had an RPM adjustment switch, had vibration dampening feet or pads, and was USB-powered...." Read more
Customers like the quality of the electronic component fan. They mention it's well-built, has a quality motor and bearing, and is extremely quiet. Some say it'll run strong for a few years and is powerful enough for its purpose.
"Xbox One is a fantastic gaming system, but man, does that little black box get hot! Especially after 12-16 hours in Fallout 4...." Read more
"...Seems like a quality motor and bearing. Easy to use with USB plug. I just plug it into a small lighter adapter when it is warm out." Read more
"...at ~75C. With the MULTIFAN S3 in place, peaks hit 65C. Excellent for low-RPM, purely external cooling!..." Read more
"Yup its a fan, and a strong design one. Has a speed button on the cord if you want to shut if off or change the speed...." Read more
Customers like the temperature control of the fan. They say it keeps their computer well ventilated and effective in maintaining the temperature between 85 and 90. They also say the fan has a nice balance for cooling and low noise. Some customers mention that the fan lowered temperatures by about 10C, simply blowing air across the router.
"...120mm had a nice balance for cooling and low noise. So far, I am happy with this newer model fan...." Read more
"...At medium speed, it lowered temperatures by about 10C, simply blowing air across the router from the side...." Read more
"...If it gets too hot it slows does the internet so this keeps it cool. Just what I wanted." Read more
"...fan is so quiet, I can't hear it at all but it does an awesome job of cooling my modem." Read more
Customers are satisfied with the performance of the fan. They mention that it does its job well, is nearly silent, and keeps their devices much cooler. Some say that the fan works perfectly at the low setting and is perfect for their purposes.
"...The two fan approach works quite nicely for me: At the end of a 12-hour Fallout 4 session recently, I lifted the top fan off and put my hand right..." Read more
"...These fans do their job well, cooling the electronics I want them to cool...." Read more
"...I used dab of silicone on the 4 feet and it seems to work fine. Totally quiet...." Read more
"The fan works very well, and is even quieter than 'advertised'. Sitting on top of a Denon AVR-X3800H." Read more
Customers like the air flow of the electronic component fan. They say it moves a lot of air, is very quiet, and is capable of providing air flow up or down. Some say it's quiet enough to suck solder fumes through the activated-charcoal pad. They also mention that it keeps it cool and well ventilated.
"...There is a subtle movement of air as well, not a breeze; simply lick the back of your hand and hold it 2 feet away and you will notice the cooling..." Read more
"...Keeps it cool and well ventilated. They are SUPER quiet! Will buy again for my XBOX Series S!..." Read more
"...XB1 has a large internal fan, but it's lethargic: it draws a small volume of fresh air and pushes out an equally small volume of hot air out the top..." Read more
"This moves a lot of air and is very quite. Really satisfied with this fan. Works perfect for T Mobiles internet gateway." Read more
Customers like the adjustability of the electronic component fan. They mention that the variable speed switch is nice, the three speed switch works well for personal use, and the speed control is nice. Some appreciate that the speed controller is a hardware switch that means that after power loss, the fan still runs at its maximum speed.
"...So far, I am happy with this newer model fan. The variable speed switch is nice, shame they took out the USB-to-AC power adapter, but that's OK, I..." Read more
"...The newest AC Infinity now has a variable speed switch, and costs less. Cabinet temps seldom exceed 5-7 degrees over the ambient room temp...." Read more
"...I wanted an external fan that was extremely quiet, had an RPM adjustment switch, had vibration dampening feet or pads, and was USB-powered...." Read more
"Yup its a fan, and a strong design one. Has a speed button on the cord if you want to shut if off or change the speed...." Read more
Customers like the connectivity of the electronic component fan. They mention that it can be either powered by a USB port or the provided plug adapter. The fan utilizes the side USB port and has a passthrough. Additionally, it has an extra USB plug and an inline female USB port that allows other USB devices to use.
"...It's a good fit and utilizes the side USB port (I didn't even know it was there)...." Read more
"...Seems like a quality motor and bearing. Easy to use with USB plug. I just plug it into a small lighter adapter when it is warm out." Read more
"...adjustment switch, had vibration dampening feet or pads, and was USB-powered...." Read more
"...The fan is powered by USB, but it also includes a USB charger / power supply, so it can be wall-powered as well...." Read more
Customers find the electronic component fan to be a good value, inexpensive, and worth the investment.
"...My solution is simple and relatively inexpensive (especially considering the cost of a new XB1). It's also two-pronged:PART ONE: This fan...." Read more
"...The 120mm seems to be the best fan for the money.Original review:Small, but not so small that it can't move air.QUIET!..." Read more
"...AI-MPF120A had some excellent reviews on Amazon, and given the reasonable price, I decided to give it a try...." Read more
"...Given all of the great features, and its very reasonable price, I could not be happier with it...." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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My solution is simple and relatively inexpensive (especially considering the cost of a new XB1). It's also two-pronged:
PART ONE: This fan. Place it on top of the exhaust vent to help pull hot air up and out. (Use a deflector to redirect air flow if your XB1 is in a cramped location like a bookcase.) Fan can use one of the two USB slots on back of XB1.
PART TWO: (and this is important) A side vent fan of some sort. Blowing in. Another 120mm sitting on the outside? Maybe. It's so quiet, I may try that. The fan I chose however was the DOBE integrated side-vent fan. Available on Amazon. (There are several fans of identical design which makes me think there's one manufacturer and many distributors - I chose DOBE because their ad was almost in English). Snap out the old vent/dust cover (use a thin butter knife and throw out the plastic pry included) and then snap in the fan unit. It's a good fit and utilizes the side USB port (I didn't even know it was there). The design gives you back two USB ports to compensate but I haven't tried them (I've read there may be data transfer issues vis-à-vis external HDDs but that's beyond the cooling focus here).
The two fan approach works quite nicely for me: At the end of a 12-hour Fallout 4 session recently, I lifted the top fan off and put my hand right on the exhaust vent and could barely discern the heat. What a difference!
DOWNSIDE? Only from the integrated side-vent fan: A slight fan-hum is audibly discernable even on the low setting. I think I can live with it though given the results. The AC Infinity fan on the other hand is whisper quiet. When the DOBE stops working I may just buy a second 120mm and stick it along the side vent and see how that works. Hope that helps all you XB1 gamers out there have a cool summer!
There are some differences between the older model, and the newer model of these fans.
- This fan was already assembled. The earlier model, I had to screw the fan guards and feet on.
- The older model was only on/off, this new model has the option for Low, Medium, High, and Off.
- The older model included a USB-to-AC power adapter. This new model lacks the adapter.
So far, this fan is nice, I like the variable speed settings. I like it was ready to go out of the box. I used a USB-to-AC power adapter with this new fan, since the switched item I have it cooling, only has a switched power plug, nothing USB switched. When this 120mm fan was on High speed, it seemed a bit louder than my old model 120mm, but I didn't compare the two too much.
I bought this to replace an earlier model of the 140mm AC Infinity fan. I found the 140mm fan to be noticeably louder than the 120mm fan, the older models I own. After that, I decided that when I needed more fans, or needed to replace a fan, I'd buy 120mm, no more 140mm. Well, a 140mm fan began to get noisier and noisier lately, so due to the fan increasing in noise lately, I decided to replace it with this 120mm fan.
I was happy with the older model of these fans, though I preferred the 120mm, to the 80mm and 140mm. 120mm had a nice balance for cooling and low noise. So far, I am happy with this newer model fan. The variable speed switch is nice, shame they took out the USB-to-AC power adapter, but that's OK, I still have some from the older model fans, and it's an easy enough item to find and purchase separate.
These fans do their job well, cooling the electronics I want them to cool. All of them I have in use, are pulling air through the electronics, though, not pushing it.
Top reviews from other countries
Reviewed in Spain on April 4, 2024
J'ai essayé plusieurs tapis de ventilation pour refroidir une udm pro avec des résultats très mitigés. Au mieux j'ai réussi à obtenir un abaissement de 5°c de la température du cpu mais avec un bruit largement perceptible.
Avec ce ventilo j'ai un abaissement de 8°c du cpu dans un silence absolu.
J'ai positionné la vitesse sur médium.
Possible que j'arrive encore à gagner 1 ou 2°c en irritant la position hight mais totalement inutile dès lors que le cpu est à 42°c et que le châssis de la machine est froid (avant je pouvais à peine poser la main dessus...).
Bref je recommande ce produit.
S'il y avait une étoile bonus je l'aurais mise !







































