ELUTENG 40mm USB Fan with 3 Speed Control USB Ventilator 5V Max 5300RPM High Flow VR Cooling Fan Compatible for Receiver DVR Playstation Xbox Computer Cabinet Cooling

My HP Pavilion AIO desktop tends to run hotter than I like, so I mounted a ELTENG 4 mm USB Fan over the warmest vents on the top of my PC's case, as a simple expedient, to limit my heating issues. It works and provides effective cooling with the fan continuously running on its LOW setting. ELTENG has given me an effective remedy to a bothersome problem at a great price. The fan is a quality, well made, product and I highly recommend it as an economical fix for similar cooling problems. NOTE: Mount the fan so that is blowing OUT so that it draws cool air through the bottom vents on the PC's case and "exhales" the warm air through the TOP of the case.

This really is a great product. Especially for the price. It’s a breeze compared to my old setup. Before I came across this gem, I’d been using just a regular old computer fan that I’d yanked from Dianne’s computer and an old camcorder battery I kept from my days working on adult films. It didn’t have any fancy settings or any of this newfangled protection they put into everything nowadays. It was either on or off and if I grabbed it while it was running, I nicked my fingers and that’s just how it was, until I found this product. It’s a little bigger than my old fan, so it fits snuggly into my back pocket, with plenty of cord to reach my new power bank I keep in my other pocket or my satchel, and it keeps the air moving. The HML switch is small enough to fit through my belt loops and with some planning, the cable can easily be strung through my belt loops keeping the switch conveniently placed at my side for easy access. Stringing it through my belt loops also keeps excess cord from being snagged by my flailing arms or those damn doorknobs Dianne insisted we get when we remodeled our home last year. I couldn’t believe how great the HML controller is for quick and easy control of the fan speed. The different speeds are great for a variety of cases. The lowest speed is great for just keeping the air flowing and keeping my pants cool and dry while the highest setting is great for quickly dispersing increasingly pungent smells. And it’s so quiet. Even on the highest setting, the fan remains silent. No more awkward “what’s that humming noise?” questions from people I got with my old fan. If it weren’t for the constant cool breeze, I’d forget it was even there. The grates on both sides are a MUST-HAVE. I thought I would just take them off, but they really do provide great protection on both sides of the fan. I no longer nick my fingers when I remove the fan from my pocket when I forget to turn it off. I haven’t had to put a new bandaid on my finger in days. And no more awkward fidgeting trying to readjust the fan in the heat of the moment after it’s become snagged on the pocket lining. My old fan constantly got caught up on my pocket lining. But the grate keeps the lining away from the fan blades no matter what. And the grate is strudy, too. Only the one time have I managed to depress it far enough that it came into contact with the fan. But, that was only because I accidentally sat down on the metal bleachers at Mathew’s baseball game with it still running in my pocket. But, even then, the grate bounced right back and didn’t bend at all. It’s still as straight as a rabbit’s ear on the Fourth of July. I’d recommend this product to anyone looking for a pocket fan. I like it so much, I’ve already purchased one for work, one to keep in my pickup, one to keep in Dianne’s car, and even one for David because I know he’ll just love it. There’s nothing better than having a cool crevasse in the heat of summer, being able to disperse those wrank bouts of gas after Dianne’s world famous enchiladas, and warm apple pie. Just the other day, Dianne and I were grocery shopping. I let one slip in the produce section down there at the Walmarts. I flipped the switch to high and in a matter of seconds, it was a row over. The poor girl stacking the carrots started gagging because she thought some of her produce had gone bad. But no one looked at me for a change.

the fan is well made and the three speed switch is a big plus. But there is no getting around the fan is very small and to move air it must work much harder than a bigger diameter fan. For this reason it causes noise. I am using it behind a tv to cool a roku box. There is USB power behind the tv so it is a natural choice. The noise isn't much but in a quiet room late in the evening you will notice the fan noise but it is unlikely to bother you. I have left it on (It turns off with the tv) and the Roku never gets hot (Two old ones did and failed hence the fan.) So if you have a USB port and need to cool a poorly designed device such as a modem, Wifi router, or a TV device then this is a good candidate because of the power source and the size. It has solved my problem, now only if Roku has hired better engineers ... then lol

The internal fan stopped working on my GE Opal ice maker. Rather than replacing the original fan, I decided to give this a try by attaching it to the outside with magnets. It has been running 24/7 for a year today (11/11/25) and still going strong! I haven’t evening cleaned the dust off of it and it just keeps spinning along. Pleasantly surprised by the quality. Works perfectly for the ice maker on the medium speed.

I use two for a Poison Dart Frog enclosure, so far I’m impressed. Pretty quiet, decent airflow (for my application though) and price.

Just received this, so far it's great. Works well, nice quality.

This is a great little fan! It's very quite, has 3 speed settings and it can either connect into a USB port or a regular outlet with a USB adapter. I use it to cool down my large Harman-Kardon stereo receiver. It sits flat on top of the receiver and makes no noise what so ever with the added rubber stick on feet! My previous HK receiver use to shut off when it got hot...not with this one!

I bought this fan for a humid plant terrarium. When the tank gets a little too humid, this fan sucks the air out and helps to regulate humidity to within range. It also works well in circulation and removes stagnant air. I've only ever used the lowest setting (which is very quiet, but not to the point where you don't know it is on), but setting 2 and 3 give off a good breeze if you're wanting to use as a desk fan!

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This tiny USB fan works very well for me. I use it to cool my XGSPON SFP, and despite its small footprint, it handles the job reliably. The airflow is modest but consistent, and it’s quiet enough not to be distracting. It’s not a powerhouse, but for targeted cooling in tight spaces, it’s a smart little tool. Definitely exceeded my expectations.