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

I liked the fan with speed control. Works well for my needs. Quite also.

This is a good little fan keeps the desert tank air circulating keeping the temperature accurate.

I used this fan to provide some circulation for a orchid I have in a enclosed plastic box. It works good but there is one issue that cropped up. The average humidity in the enclosure is 75 to 80 percent all the time. The top of the 4 nuts that hold the gard over the fan blades have slighty rusted in the extremely humid enviorment. This has not seem to affect the function of the fan which has continuously worked for 5 months as of this review. Does make a winy noise, not dead quiet, but not enof to bother me but the fan is in an enclosure which dampens the noise. If I had any complaint I would have liked the electric cord longer. Its roughly 40", with the speed adjustment swich about half way. The plug-in is usb so I had to use an adapter to plug in to an extension cord. Works fine and I have never had the adapter get warm. A good little fan for the price.

Its tiny but mighty, exactly what I expected and it works as intended.

Works well

Only buy this if you intend to screw it into place. Otherwise, find one that has those stubby grippy feet. Wasn't what I thought I needed, but I'm not too upset. It was a good place to start. What to expect: A small amount of airflow, regardless of it's speed. It's a small form factor, with small fan blades. In hindsight, it's an obsolete generation of fans compared to what's being developed for the future of fans without blades. The higher RPM simply tries to make up for the lack of blade area to move air. In this case, it seems to result in noticeable sound, but it's probably quiet enough for audio equipment to easily filter out the sound. Consider the 80mm design, but if the 40mm size is what you need, ok. Maybe don't get the 40mm USB if you intend to use something this small to begin with. For the average joe like me, consider the 80mm size first before you continue.

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.

I bought two. One semi works very little air flow while the other I don’t feel a thing! Will not buy again or recommend

The is doing the job that I bought it to do. However, I was hoping for a bigger fan based on the sales picture. I am using it to cool my mini pc and it surprised me to do the job based on its size.

Bought this to work in a portable freezer, and to my surprise and delight, has been doing really well

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Works as expected

works wonderfully for mini pcs, good at cooling and very quiet as well (sometimes i forget its on thats how quiet it is 🤣)