AC InfinityMULTIFAN S4, Quiet 140mm USB Fan, UL-Certified for Receiver DVR Playstation Xbox Computer Cabinet Cooling

I've now bought a couple of these fans. They have variable speed and are being used to cool some network devices by sucking air over them. Even at the slowest setting they are very effective and are silent. I particularly like the rubber feet supplied which allows the fan to sit noiselessly on a server or to clip on to the edge of a vertical device. Runs on USB output from one of the devices - they can be 'passed through if the port is needed to connect a signal cable. Not sure if you could run the fan AND power a device through the USB port so perhaps only connect self powered USB devices through this cable.

Fantastic product. Quality built and high class packaging. Easy and clear way to use. Solved my burning Amp inside a closed cabinet. I really can leave it ON on Hi mode and close the door knowing my amp will be on low temp for the whole day. Mind you that I couldn't use the USB input of my integrated amp, Arcam SA20 properly. It will run the fan off course but it will prevent the amp to go to sleep mode when there is nothing to play. Minor issue but it would be nice if it did work that way. Not the Fan’s fault, though. On Hi mode when the door is closed I can’t hear the fan at all even without any music playing. If the door is open may Lo mode for low volume works better although still on high volume you barely notice the fan.

This is by far the most silent fan that I have up to now, on setting 1 you will not know it is on,max setting can have some sound but its not bad, there are other fans out there but the sound level on them is not good, the rubber feet helps keep it in place with no vibration, you can remove all rubber feet and wire fan guard, you can also daisy chain to other fans of the same if needed with the added USB input.

After a little research, I came across these fans wile not being cheapest.. boy do they do the job my console starting suffering serous overheating.( Still not sure why Microsoft cramed so much into such a small form factor) but Now it's cool to the touch I can enjoy gaming at 120fps using the unit again without my system turning into a HeaterFantastic solution to a design flaw. If you have items that run hot at higher frame rates.. here's your answer

I have an amplifier in an open cabinet that gets quite hot and in the height of summer overheated and shut down. I bought this in the hope that it would stop this happening and the results have been really good. Before the addition of the fan the amp would run at around 65C and after the addition of one of these fans at the side blowing over the casing on its lowest setting it dropped the working temperature by 30C to 35C so good results overall.These fans do have a couple of negatives however. Firstly if you are a critical music listener anything higher than it's lowest setting is likely to be audible and secondly, the biggest issue for me is that AC Infinity make a big song and dance about being able to daisy chain multiple fans together but when you do this you lose all control over the fan speed. I daisy chained just 2 together and wanted them both on the lowest setting due to the noise issue but this does not work. The first fan did not spin at all and the second one was super slow. It turns out that you have to put the 1st fan in the chain on maximum for the 2nd fan to work so all control is lost! I had this confirmed by AC Infinity support and I am now having to run the second fan off a separate supply which totally defeats the object of being able to connect them together, hence the loss of a star from my rating.

Was looking for a USB fan to create some air flow in my AV cabinet. From the moment I turned these on I knew this was a quality product. Absolutely silent. Love it.

These are great fans, purchased two for the top of my Axolotl tank as aquarium fans can be unreliable, noisy, poor quality, pricey for really good ones.These make no noise at all and have several speed settings, they really do the job well, I may hook them up to a controller in future.

I have an unusual use for this. It sits on my bedside cabinet pointing towards my face - about a foot or so away.Even on the lowest setting it provides a gentle cooling breeze. And unlike many other fans on the low setting its virtually silent.It would be no use as a room fan - far too small and puny. But as a personal fan it works well.

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!

I recently purchased the AC Infinity MULTIFAN S4, and I am astounded by the exceptional quality and performance of this fan. I must confess that, given its price range, I had moderate expectations. However, this product completely shattered those expectations by offering a premium experience.Key Highlights:Premium Quality: The build material and finish are impressive, something I did not anticipate at this price point. The build quality is durable and exudes a high-end feel.Quiet Operation: The fan is incredibly quiet, even at higher speeds. If you're looking for a noise-free environment, this fan has got you covered. It's so quiet that I had to double-check to make sure it was running.Efficient Cooling: I purchased this fan to keep my good old 2018 Mac Mini i5 cool, and it does the job remarkably well. The temperature drop is noticeable, and the device runs much smoother than before.If I could give this more than five stars, I absolutely would. Highly recommended for anyone in need of an efficient cooling solution.

Fan is very quiet, had to place my hand in front of it to check if it was running. It appears to be well made and also reasonably priced. I purchased the fan because my AT&T modem/router was over heating and causing intermittent service. It was either running my A/C at 75 degrees or buying the fan. Saved money buying the fan.So far, it is running well and keeping the modem/router cool keeping my internet service running smoothly.Word of advice: If you are experiencing intermittent internet service it maybe your modem/router is over heating. I found out this on my own after 4 visits from the AT&T technician. They couldn’t figure out why it was happening. Fortunately, I kept a log when the internet was going out and reconnecting. As the temp got over 77 degrees during the day the internet would stop working.

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.

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 entlangfließen lasse. Damit wird die warme Luft, die die PS4 hinten ausstößt gleich wegtransportiert und staut nicht groß 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 heiß 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.