ELUTENG Mini 40mm 5V USB Fan Desk PC Fans with L/M/H 3 Adjustable Speed Portable USB Computer Fan USB Case Box Electronic Cooling Fan 5300 RPM with Metal Grill for Laptop/TV Box/AV Cabinet/PS4/Router

I am using this to help cool a Linear Power Supply. Rather than the fan extract the heat more rapidly I removed the grill and turned it upside down to blow cool air into the power supply. Even on the low setting it has performed exactly as I needed it to. I didn’t want to freeze the LPS just bring the heat down a few degrees. The 40mm size is perfect for the Sengterbelle 12v LPS leaving enough venting either side of the fan for the air to escape.I would like to know how long I can leave this fan on for but there is no info on a constant run so it looks like trial and error but in the meantime the heat is under control even without going high on the setting, works just fine on low. Some say this fan is noisy but seriously I am not sure what they maybe using it for but I have had louder mosquitoes in my ears than this fan! It’s quiet.

I purchased this fan to replace a DIY job I carried out on my TV cabinet.My PS4 Pro is in a wooden TV cabinet with very little ventilation and the back of the cabinet would become noticeably warm when playing games, definitely not a good thing!To remedy this I cut out a square hole from the plywood back and fitted a PC fan that I soldered to a male USB connector (not ideal but it worked) to draw air from the back of the PS4 and out. While this certainly worked, I didn't feel too happy leaving such a botch fan connected to my expensive PS4 in case the worst happened.After some research I came across this product and despite it seeming a little costly for what is essentially something I created using bits I had lying around, I thought it would be worth trying.It arrived in a simple no-fuss box and I soon had it installed and set up.The key thing here is that the fan is rated for a 5V power supply unlike most PC fans (12V) so this runs nicely off the PS4's USB port and it moves a LOT of air compared to my DIY version. The metal grille ensures wires won't get caught up in the fan and it also gives a very high quality finish to the product.I opted for the variant with speed control so that I could turn things up only when needed.The fan cannot be heard over the TV and I am extremely happy with the product!

Great little fan, does exactly what you'd expect and does it pretty well. Isn't really noisy and has a good flow of air. USB cable length could be a bit longer but I guess that depends on what your using it for. The switch box that's attached to the cable is absolutely great, can easily be mounted somewhere and feels good to click into different modes. All in all a great little fan for the price and would definitely recommend.

I bought these to put under central heating radiator rather than purchase the purpose made ones at four times the price.I have a narrow column radiator standing at about 6.5 tall and is partially covered by a small set of drawers.I placed the fans on a raised mesh small platform under the radiator behind the drawers so it can draw air, I wanted to stop the warm air pooling in the corner, I plugged the fans into USB socket and then into Alexa Wi-Fi plug, so the fans are controlled by voice, I can give the command to just turn it on for a specific amount of time or just turn them on and off Ad-hocIt definitely made a difference, a can actually feel the cooler air being drawn from around my feet,the hear is more evenly spread in the roomI have them on low speed which is perfectly adequate for me, if there is no other noise in the room it’s barely audible, but once the TV or radio is turned in or your in conversation you can’t hear itI’m now going to purchase some more for a radiator under my bay window

I have used this fan to circulate the air in a home made 3d filament dryer and it works a treat.I especially like the speed control function.How long it will last,I don't know so I'll report back.

Works great

Needed a fan to help airflow on my work laptop. This easily fits under my laptop stand and helps with airflow, but it’s a bit noisy…

Does what it should very cool it’s knocked the temps down on my pc very well highly recommend