AC Infinity MULTIFAN S4, Quiet 140mm USB Fan, UL-Certified for Receiver DVR PlayStation Xbox Computer Cabinet Cooling
€18
Price: $17.99
(as of Aug 03, 2025 10:44:33 UTC – Details)
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
Multi-Speed Controller
Inline switch enables you to optimize fan speed for various applications. Can be powered through USB ports found behind AV electronics and consoles.
Ultra-Quiet Fans
Designed 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 Approved
Contains UL recognized axial fans under #E503903 in 2018 by Underwriter Laboratories. Archived in UL Online Certifications Directory.
Silicone Rubber Feet
Absorbs noise and surface friction caused by fan vibrations. Unused pieces can be detached to reduce overall height for tight spaces.
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Customer Reviews
4.6 out of 5 stars 5,840
4.7 out of 5 stars 6,037
4.7 out of 5 stars 3,143
4.6 out of 5 stars 10,341
4.7 out of 5 stars 7,869
4.7 out of 5 stars 1,466
Price
$13.99$13.99 $14.99$14.99 $17.99$17.99
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$21.99$21.99 $17.99$17.99
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
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Dual Ball Bearings at up to 67,000 Hrs
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Axial Fans Meet UL-507 Standards in 2018 for Safety (Underwriters Laboratories #E503903)
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USB Plug with 6-foot Power Cord
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Compatible with Turbo Wall Adapter (Sold Separately)
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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
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: 5.5 x 5.5 x 1 in. | Airflow: 57 CFM | Noise: 18 dBA | Bearings: Dual Ball
Customers say
Customers find the fan extremely quiet and appreciate its performance, with one mentioning it works great on top of the Xbox One. The product effectively cools devices, dropping temperatures by 20-25°C, and customers praise its solid construction and great design. They like its size, with one noting it works well for electronics, and its airflow capability, with one mentioning it pushes air into the laptop CPU. Customers appreciate the three-speed control feature and consider it well worth the money, with one highlighting how it keeps expensive audio equipment cool.
11 reviews for AC Infinity MULTIFAN S4, Quiet 140mm USB Fan, UL-Certified for Receiver DVR PlayStation Xbox Computer Cabinet Cooling
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€18
Hasan Khasawneh –
The best fan out there, excellent cooling with minimal noise.
I have tried many different brands, but this one is 5 stars. I bought 2 140mm size for my Tplink ge800 router because it gets hot most of the time and i wanted something to keep it cool, and yes they work very well. Very quite and barely any noise level at high speedGood quality and it cools! Other brands are loud and donât cool. Highly recommended, yes you per extra few dollars but you get what you pay forÂ
Kurobarahime –
cool quiet and reliable
Bought theae for AV receiver. Two years later, I’m buying another for my router. Others still working brilliantly and the router is running so much faster now.Love these things. Quiet, cool, and reliable.
doesitreallymatter873 –
Almost Invisible/Stealth Quiet
Im writing this review during a very HOT unusual few June weeks in Minnesota, its been over 90 for almost 2 weeks now, I have a full size 42U server rack for my home lab, it has a big hole on top that nobody’s exhaust fans fit, 21 x 5.5, but the 140mm measurements of this fan is just big enough that I can sit about 4 of them on top of the racks hole. I work in Tech Recycling, so I see what happens to most tech equipment when its removed from service, its rare to see AC Infinity products, I rescued a old AC Infinity Controller they don’t appear to sell anymore, but its similar to the one they sell now, and rescued a 2U Rackmount 4 fan with controller unit, I was amazed how quiet the rack mount fan unit was even after many years of use, the LCD controller is a bit hard to read, but other then that it works fine. So I needed some USB fans to plug into the other controller I rescued, I was concerned there was only 2 USB ports, which is the same as new model they currently sell, but when these fans arrived, I saw a lovely daisy chain USB connector, apparently you can have up to 4 of these on 1 of the USB controller ports so those 2 ports give you maybe 8 fans , I don’t need that much, but its a nice feature, I plugged these in to the old controller set it on AUTO and away they go. The controller appears to have Low/Med/High setting but these fans also have a 4 way switch on the cord which seems to be 1 notch higher then whats available on the controller, I have them maxed, very light hum, not much more then my laptop fans on a hot day. Compared to others, I have rescued hardwired plug and run fans with no thermostat, that sound like a bunch of servers running, so these are by far the quietest ive heard (almost can’t tell they are running), Now that I know they daisy chain, I bought 2 more, with 4 of these at about $15 each vs $300-400 exhaust fans that are usually 120mm, they sell for most racks this is a great deal and larger.Perfect product, not sure how strong they are? they are not as FAT/DEEP as some Ive seen at work, its very hot, my rack runs about 3-4 degrees hotter then the room its in, so even with the fans they are having a hard time cooling it down, but air circulation is always good. its hard to get cool when the room itself is hot upper 80s, and rack is maintaining lower 90s.Only thing I would add to this product,RGB colors would be nice for those of us that like adding colors to our loved computers, but probably wastes electricity and reduces power so maybe its better they don’t have color lights. (only if it don’t sacrifice cooling power)CLIPS, since Im buying 4 of these to fill that big 5.5 x21 inch hole in my rack that normally a bunch of wires would go through, but in my home lab all wires go down, Im using that hole as a exhaust for the heat to exit up to the ceiling, these cool rubber feet are nice, but it would be nice to clip these together with some kind of clip so instead of 4 loose fans its 1 big fan. The feet are good, but since I have 3 cats that can jump on top of the rack it would be nice to link these fans together with some kind of bracket or clip just in case, not too worried about it, but it would be a nice modular feature.Lucky for me its only hot in Minnesota 3 months a year, so most the year these fans won’t have to work hard, but they are running 24/7 now in a near 90 degree room. These would be great for quiet rooms, chances are your normal household fan is louder. Love the product, both the old ones I rescued that were not quite ready to be recycled yet, and these new fans.
Jacob –
Itâs been doing its job for a while nowâ¦
I had this thing for a while now, and I first got it with and for my Xbox series s back in 2020, just to wick the heat away, itâs been on for the better part of 5 years, looks dusty and nasty but still works fine, and still wicks the heat from the Xbox to this day. Itâs quiet and moves decent air for that sound level, you could put it on high, but for my Xbox, the low setting is more than enough. Just a good quality fanâ¦
Paul –
Has been running a year and a half without any problems so far!
I have a passively-cooled mini-PC firewall that got extraordinarily hot. The dimensions of this fan were a perfect match to sit on top of the heat sink blades on the top of the case. The USB power makes it simple to plug it and forget about it. The fan is completely silent and made a huge difference in temperatures. I have been running it 24/7 for a year and a half now without any issues. Highly recommended!
Mickey Thompson –
An effective solution to cold component in an Entertainment center
This product does a good job of cooling my PS5. I place it behind the PS5 and turn it on. There are several speeds. The unit is quiet. I start the fan when I turn-on the PS5 so that it won’t overheat inside the entertainment console. The price is very competitive, and you can added another fan if necessary. You have the ability to couple additional fans.I strongly recommend this product…
Muneer Lyati –
Good quality ð
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Jorge S. –
Excelente producto, excelente acabado y presentación, funciona perfecto, enciende y apaga junto con el receiver conectado al USB, silencioso, imperceptible incluso a volumen bajo y el receiver trabaja mucho muy fresco en la velocidad más baja del ventilador, que impresionante, mega recomendado!
=HR= –
Ich habe gleich zwei davon bestellt um meine PS4 Pro etwas zu kühlen, die bei Horizon Zero Dawn doch passagenweise nervig lautes Kreischen fabriziert. Laut genug um dass ich es selbst unter meinem Headset höre … klar kann man sagen “Junge, du hast ‘n besch***enes Headset” und das stimmt vielleicht sogar, aber dann bin ich lieber froh, dass ich die PS4 noch höre. Obwohl sie schon ein Kühlpad drunter hat, erzeugt sie offenbar so viel Wärme, dass die Lüfter darin annähernd unter Volllast laufen. Das geht natürlich nicht und so habe ich zwei dieser Ventilatoren gekauft.Ich habe verschiedene Konstruktionen ausprobiert, das beste (PS4 ist am leisesten) hatte ich, als ich beide Ventilatoren rechts neben die Konsole stellte und Luft sowohl in’s Gehäuse als auch hinter der Konsole entlangflieÃen lasse. Damit wird die warme Luft, die die PS4 hinten ausstöÃt gleich wegtransportiert und staut nicht groà auf. Zudem wird ständig kalte Luft in die PS4 geleitet und darunter und darüber wird die Luft auch ständig in Bewegung gehalten, so dass mehr Wärme über die Oberfläche abgegeben werden kann. Man kann die Ventilatoren auch so platzieren, dass je einer auf einer Seite steht, einer pustet die Luft über die Konsole, der andere saugt sie ab … allerdings war dies nicht ganz so effizient.Zum Lüfter selbst. Man kann mehrere Lüfter nacheinander schalten, laut Bedienungsanleitung bis zu 4 Stück. Man muss dabei aber beachten, dass sie in einer Reihe geschaltet sind. Der erste Lüfter kann ohne die anderen betrieben werden, aber der zweite nicht ohne den ersten, der dritte nicht ohne den ersten und zweiten, und so weiter.Wenn beide Lüfter von allein anlaufen sollen (beispielsweise zusammen mit dem Starten der PS4), muss ich sie von der Geschwindigkeit im ausgeschalteten Zustand (kein Strom über USB) mindestens auf der Stufe “Medium” stehen haben … und zwar alle beide! Auf “High” geht auch, aber “Low” reicht für den zweiten Lüfter nicht aus.Die Lüfter sind nicht unbedingt “flüsterleise” und man kann sie besonders unter Vollast doch recht deutlich hören. Allerdings sind sie mit “Medium” durchaus schon kräftig und relativ ruhig (und nicht lauter als die PS4 Pro im regulären Betrieb, beispielsweise beim Abspielen einer BluRay).Ich habe diese Lüfter auch testweise mal auf meine Onkyo-Anlage gestellt und zwar so, dass sie von vorn betrachtet hintereinander auf den Lüftungsschlitzen liegen. Der hintere hat Luft hineingepustet, der vordere Luft herausgezogen. Selbst bei niedriger Drehzahl der Lüfter (und dann sind sie so gut wie nicht mehr zu hören, gegen den Klang der Anlage sowieso nicht) wird die Anlage zwar immernoch etwas warm, aber nicht mehr so heià wie sonst üblich. Der Unterschied ist mehr als deutlich und seitdem steht fest, dass ich noch mehr dieser Lüfter bestellen werde.In einen USB-Anschluss einstecken, einschalten, fertig!Die Ergebnisse bei der PS4 waren nicht überragend aber spürbar, das Ergebnis bei der Onkyo-Anlage war kaum in Worte zu fassen.
Syedh –
Very silent and Low and Med speeds. Good airflow.Very high quality, well made product. Using this for my AVR located inside a narrow cabinet to improve coolng. USB cable is of sufficient length. Cons: The daisy chain USB female receptacle is exposed and sharp and could have caused scratches on my new AVR, so covered it with a piece of tape.