Fourdot USB 5V Cabinet Cooling Fan (80X25mm 3 Inch)

Does the the job detail review after 3 months.

The media could not be loaded. The fan received was not working at all when plugged into usb port or usb charger.Low quality Made in China and not checked if working or not before sending it ...

On getting the delivery, first use impression was very satisfying. It is strong, silent enough, and works well without vibration or shaking or anything. It is heavy enough so it can be put on its sides and it keeps working. I use it for 3 purposes.1. When there is power failure, and my pc runs on invertor, I just connect this fan to pc's usb port and it gives enough wind so that I don't sweat even in a hot day.2. I can put it in on window grill and it throws room air outside, so it works as exhaust fan also.3. I can put it in on window grill during evening and night and it sucks cool outside air from garden, with fragrance, to inside my room, slightly cooling the room, so it works as air suction/ ventilation fan also.All three actions are not required at the same time, so I can use this one item for these activies when needed.So, even though it is costly, it is useful and appears cheap considering the high prices of exhaust fand and suction/ ventilation fans.Thanks Amazon and manufacturer/ seller for this item.

Firstly, there is a high chance that you might get first item defective and as of my experience after replacement, thankfully I got product which I ordered 92x25 usb, but replacement unit fan's outside frame is used and really worn out plastic. It seems they like assambled pieces from different fans, but the main motor hub and alignment of fanblade is really good as it doesn't create any major vibrations or wobble even in high speed. Again it is little embarassing to ask Amazon for third replacement but I didn't want to spend more time as it was almost 13 days of wait and it's just 350/- so cannot complain much.Also from my unit DC motor seems much capable at running in higher voltages, and as of my testing in a safer side,12v gave an excellent amount of airflow but with a slight noise which is acceptable for me considering hugh increase in air flow.I purchased this product as a DIY cooling fan for my laptop ( laptop's bottom pannel has good amount of open area at back side where heatpipe, processor, gpu, usb hubs are located). I did not tried running stress test, benchmarks as of writing this review but from what I have tested at 12v adapter (not from providing 5v through usb) with turning fans on normally, I can say that it does a decent job for airflow.At 350/- it is acceptable for me as it's better (in terms of airflow) than other 120mm(official company brand rbg) fans. Also at 5v through usb I cannot get idea about RPM but it seem to on lower and quiet side, and on 12v RPM seem to be much higher at 2700-3000 (my guess). I wish I could also have ordered filter mesh in same order.This is just my review from what was my experience, and I do not intend to promote or harm this or any other brand.

Very good and effective

Product was damaged and fan often stop working

I have connected it to my DVR rack and it's been almost on non stop for 3 months now. Working perfectly fine. I had replaced the fan given by the guys who installed the dvr because of almost 50 watts electricity consumption difference.

It's useless product...I wants to return but they didn't process since 2 August...customer care service is pathetic...don't waste money on this...