Wathai 40mm x 20mm 12V Dual Ball Bearing DC Brushless Cooling Fan for 12 Volt PSU Replacment, DIY Small Electronic Equipment Cooling

My TP-Link er8411 router suffered a broken fan in transit and these fixed it right up. I did have to reverse the black and yellow wires on the fan’s plug. Apparently TP-Link uses a standard fan connector but not a standard pinout. These fans are quiet enough. They are slightly audible when running but cannot be heard with the door to my network closet closed. Installation was simple. The fans come with mounting hardware but I just reused the hardware already in place. The quality seams decent. Not the highest quality but not the worst either.

I'm a big fan of this brand! Fans work well, aren't super loud at low rpm and keep things cool. i did have to move the pins for my install (cisco 2801) but they work flawlessly and are so much quieter than the old OEM fans!

This fan was more effective than I thought it'd be. I installed it in a 3D printer, and it's so effective that I had to dial it way back from when I tried other fans of similar size and rating. I've tried other fans with similar specs and they didn't seem to move as much air as they claimed. Plus, they had rattling from bearings or maybe something else, but I don't hear that with this fan. Will you hear it? Absolutely. It's not super quiet, but no fan moving this much air in that little package will be quiet -- the point is the noise I hear is from moving air and not defective or poorly designed parts. I'm glad I found it. No ridiculously overmarketed and overpackaged (but underpowered) nonsense here. Just a more affordable and effective fan with some screws, and that's all I ever asked for.

I used these to replace the noisy fans (same size) on my Hyperion battery charger. Surprisingly, the originals have bushings, not bearings. They started to whine occasionally, and it was getting more frequent. These bolted right in. They spin fast and quietly and move just as much if not more air than the originals.

I have many different fans made by this brand; they are my first choice when I am looking for a DC fan. This little powerhouse is fantastic however it is very loud. I bought it to replace the fan on my diode laser engraver module and it works well, much better than stock. I don't mind the noise since it's used in an enclosure, and I don't have to sit next to it for long periods. I highly recommend this fan if noise isn't an issue and certainly recommend this brand for all of your DC fan needs. I think I have only had one to fail on me within a short time period and the seller quickly replaced it.

I recently purchased a BESTEK 300Watt Pure Sine Wave Power Inverter but the fan it came with was noisy. This was a perfect fit and runs very quiet. A couple things you need to know. This fan will not accept the self tapping screws the BESTEK fan uses so you will need to use the long bolts that come with this, and they will need to be trimmed so they don't touch the internals of the inverter. You can install them backwards leaving the longer portions protruding from the inverter case, which is what I chose to do. Also a minor thing is, the wire is a bit longer than the BESTEK's so you will need to route it in a way so that it doesn't interfere with the movement of the fan. Sorry I didn't take photos, I didn't think about it until after I put everything together but I am really happy with this fan. No more screaming like it's gonna die noise from the BESTEK.

Loud as hell but blows a lot more air then the thiner fans around the same voltage. If you need a fan this size that blows more air and don't mind the volume then it is excellent.

Perfect fit in a itx HTPC case. Very low noise only time will tell how long it will last. Expensive fan for its size

案外静音。 風力は強くはないが、弱くもない。

This fan is reasonably quiet and I've used it to replace one of two aging fans in a Kobolt battery charger. The old fan rattled and squeeled as it started up and I didn't want to risk overheating the circuitry so I bought this one as a replacement and it fit perfectly. Very happy to breather new life into an otherwise expensive piece of equipment. Works great, good flow and low noise.

I bought this fan to replace an intermittently noisy one in an automotive battery charger. This fan is quieter than the original and has better bearings (ball) that I hope will last longer than the OG. It fit exactly in place, the wires reached the circuit board and the best part of all is the connector fit too. So it was pretty much literally a drop in replacement that worked perfectly on power up. I am, of course, a very happy camper.

期待するほど静かでは無かったですが 動作に問題はありません。

same size and connector as original - not very quiet but similar to the original