50mm Fan 5V USB Brushless DC Cooling Fan, 4 Pack Speed 4200 RPM Fan for Small Appliances Series Replacement (4 PCS 5010 5V USB)

I just bought these, and found uses for them straight away.They aren’t too noisy and keep my usb hub cool 😎Super

I used these to help dispel heat from the top of my av receiver which is inside a shelving unit. I built a small wooden frame to mount them. They work extremely well and as advertised. They are a little noisy, but as I used three together this is not unexpected. In short good value for money and so far have performed flawlessly.

I used the fans to enhance my heating system in my vintage T2 camper and they work fantastic giving me the quick defrost in winter morning and extra heat in my c van

Powerful and relatively quiet.

Great value, well made and quiet. Easy to add to projects with the USB plug and versatile for many use cases

Just ideal for my needs - simple cooling for my mini server, sweating in a cupboard in the summer! Internal CPU temperature dropped from 89deg C to 71deg C, at a cost of one fan, two rubber bands (isolation suspension) and four paper clips... Yes, it is a little noisy but inaudible with the cupboard door shut. Result!!

These appear to actually be 24v, just with a 12v sticker. I compared them to some 24v fans after finding them very slow and less powerful than even a 4010 fan, and found that they are exactly the same. When connected to 24v they spin correctly. Unacceptable, refunded by amazon customer services after seller did not reply.

I've joined these together to make a cooling aid for my Playstaion seems to work great.