AC Infinity MULTIFAN S1, Quiet 80mm USB Fan, UL-Certified for Receiver DVR PlayStation Xbox Computer Cabinet Cooling

Excellent product. I was honestly not expecting something that works so well for so cheap. I have my surface pro 4 and dock stuffed into a slim drawer at work, it powers 2 4k monitors and does a LOT of heavy computing so it gets very hot, even the dock gets hot. Of course it doesn't help that it's stuffed into a drawer. It was to the point where the CPU was being throttled and everything was running slow as molasses, and probably causing long term damage as well.I cut out a hole the size of the fan, got some #8 32 2" machine bolts and lock nuts and attached it to the bottom of my drawer. The long bolts were so I could use the rubber mounts. The fan blows outward, there is plenty of air coming in around the drawer. I immediately saw a difference in performance, PC ran as it should be running. In terms of noise, there is none. My office is fairly quiet, but I can't say it's funeral parlor quiet, but still I can't hear any noise at all. The fan is solid, no rattling, no ball bearing noise, and this is at full speed. Air output seems excellent, I can feel a strong output at about 4 inches or so away. My surface pro is cool to the touch so I know it's doing it's job.I also like that it comes with a daisy chain output USB port, so you can daisy chain multiple fans. I initially thought it was a USB bypass, but it doesn't work with peripherals such as a usb mouse. In the instructions it only references it as a fan daisy chain. I'm completely happy, but if I had a wish list I'd say consider making this a usb bypass because usb spaces are highly limited on my surface pro/dock setup.My only caveat, but this isn't the hardware's fault, is that when my PC is locked the fan stays on. That's just how USB works. I'm in search of a program that can allow me to change the hours the fan runs, as I don't need it to run when the PC is locked as it's not being used heavily. I also cannot put the PC to sleep because I need remote access to it, although I have considered wake on LAN as an option. My concern is I don't know how long the fan will last being used 24/7 like this, but even if I replace it once a year it's cheap enough.

Absolutely excellent fan - normally I wouldn't bother writing a review on something like this, but it has really impressed me.I bought this to help cool a WD EX2 Ultra NAS storage device that runs little warm for my liking, with drive temps in the 50's C before the internal fan even turns on. In reading the WD forums, apparently this is a pretty normal condition for this device, but unfortunately its set points can't be adjusted by the user based on hard drive temps.This fan can be placed in a variety of positions - you can lay it flat or stand it on its side, and the rubber corners are soft and do not allow anything to be scratched. The fan has a three-speed switch on the USB cord. It's so quiet that at low and medium speeds, it's hard to tell it's on at all, and there is virtually no vibration, yet it puts out a good mount of air. If I lay it on top of the WD EX2 Ultra's vents sucking air out of the top, it quickly lowers temps into the low and mid 40's C. I usually place it next to the EX2 blowing air sideways, and it still helps cool the unit several degrees. A real bargain at this price, and a great solution of you have components that run hot and you want a small, USB-powered solution.

One of my roku devices overheated recently, not sure why it didn't happen sooner if it happened at all. It sits on our comcast cable box, which is always warm. It had been there for well over a year, then recently, I got a thermal message while streaming on the roku. We basically only stream now and have been for a few months. The cable box is to get a few local channels and unlimited data at a specific rate.I had bought a pillar candle stand to put under the roku so air could circulate under it better, then later decided to get one of these fans. I don't know if it "fixed" the issue, but you can physically feel the difference when you touch the roku after streaming all day, it's considerably cooler. A week later, I ordered a second fan for the roku in our bedroom.I'm now back to order a couple more for external hdd's I have that tend to always run warm since they don't have any fans built in and they aren't SSD. Debating whether to get 40mm or just get the 80mm fans again... will probably get the 80mm since room isn't a problem and a larger fan can push more air more quietly anyway.

I now have 3 of these fans, fulfilling different roles. Two of them are next to a couple of Raspberry Pi running Volumio media player and my AllStar ham radio hotspot. One of them is on my desk to provide cooling to a test Raspberry Pi that is only used when I need to experiment with something, otherwise, it doubles as a desk fan to provide a little breeze when it gets too hot in my den. The fan is a little bulky, but is well-built, and is very quiet, even at the highest speed. The fan has a 3-levels switch where you can control the fan speed. It is USB-powered, so it can be conveniently used in multiple places; I can bring this to different places, and only need a USB power bank to power this thing. Because it runs at a low RPM, it draws very little power; I can run for days with my USB power bank. Overall, this is a good purchase, and I definitely recommend this fan.

This USB fan works great. It's well made and convenient to use. I use this to draw heat away from the aquarium LED lighting, to keep the aquarium water cool on my Fluval 32 Gallon aquarium. Works great for this purpose!

I ordered two of these. Immediately after I connected them and turn them on (to max speed) I was disappointed because I could barely even feel the breeze with my hand.I bought these to flow over my external NVME enclosures, which are solid aluminum and can get hot if there is no airflow.However, after actually using my drives heavily to heat them up, I discovered they did a GREAT job. Not only are they whisper quiet but they did exactly what I wanted regardless of my initial impression.