Dual AC USB Computer Fan 140mm USB Fans for Cooling 3 Speed Control 12V Computer Fan with AC Plug for Laptop Receiver DVR PlayStation Xbox Desk Computer Cabinet Cooling

Works well. Really quiet....so quiet, I've actually left them on overnight (mistakenly), because even though I turned off any / all noise makers in the room (ie: computer, tv, etc.), I didn't even really notice the barely noticeable "hum" of the fans (they're that quiet). Turns my warm (almost hot) External HDD's almost room temperature (when I touch the running HDD, I can't tell from the temperature of the casing that it's running...only from the movement of the platter / arm). Like the fact that it has "Feet", on the corners, on both sides, so that you can not only elevate the HDD off the desk allowing more HDD case surface area for heat dissipation, you can either BLOW air onto the HDD, or SUCK air away from the HDD (depending on your needs)...just turn the unit over, depending on which way you need the fans to go.

I bought the 80mm version to add extra cooling to COB lights like my Godox units, and they’ve been great for that. I zip-tie the fans right to the body of the light and it noticeably improves airflow, especially during longer sessions when heat usually builds up. It’s quiet enough that I don’t notice it running, even on the higher setting, and the USB power makes it easy to plug into whatever power source I already have nearby. Build quality feels fine for the price and I’ve had zero issues so far. Simple product, does exactly what I needed it to do, no complaints at all.

I use this under my DJ controller in its case to keep it cool. Does the job. Not too noisy. So easy to install and mount just plug it into any usb port. Moves air very well so it has sufficient power. This fans rarely fail so I see it will have a good lifespan.

So, I clearly wasn't paying attention when I purchased this, I wanted to get mini fans with a control for a little terrarium so I could circulate some air into the setup, this is a heatsink. At first one fan didn't work, it was due to the grill, when I loosened it the fan worked again. I decided to experiment with this mini heat sink and found that it is surpringly effective at looking phones while charging, even with screen down on the heatsink (if the phone has a case). So now I have a little charging stand with this cooler, it will wick the heat off a hot phone almost immedietly. Hoping this will extend the life of the phone batteries in the long run. It's been wicking the heat off of any device I am charging. Yes it is loud at full power, but I usually havea headset on anyway.

Perfect size and zero noise! My AT&T DVR was running super hot so bought this little fan to try. Absolutely impressed, easily plugs into back of router for power and with fan set on low DVR is cool to the touch. Highly recommend 👌

So far so good. Keeps my portable HDD cool and breezy! Definitely a must for certain mass capacity portable HDD.

Bought this last year to help keep my Xbox cool in the tight space it was in when my Xbox fan quit working all together I use this on top of the Xbox now and I have no overheating problems this thing is awesome I use this on top of the Xbox now and I have no overheating problems this thing is awesome

For the price they're great. I put them in the garage on the router and they worked wonderfully. They are however VERY loud. Forget about watching a movie if your planning to use these on AV equipment.

Oh it's bigger then I expected wow it brought my drive disk temp down by 10° c so u can't complain just just on default speed. I can't complain Makes no sound no vibrations and a constant speed I am using its own USB dock and not a laptop or control bored USB. I haven't tested it's threw a ps4 port ps5 ECT..

Excellent fans. I have a dual 120mm cooling my Receiver. And a dual 80mm cooling my Cable/PVR box

Works great 👍

EDIT: Unfortunately, these fans have picked up a flutter noise. It's slight, but not as quiet as 1st runs. With my led Flashlight on low, I can see how fast the fans spin, and I noticed the fans spin at different RPMs. So... 1 star removed. However, this fan size in notorious for noise, and it was a good deal for the bearing type. END OF EDIT. Exactly the size I expected. They're as quiet as 80mm fans can be, but I really like the rubbers. They keep vibration noise to zero. I have a desktop that has 1 exhaust fan in the back, with no motherboard plugs for more fans. However, I have 10 USB ports, and a hub. I'm ditching the front facade for fans. These have a long cord and manual 3 speed. Perfect for me to create positive air flow. One in the bottom and one in the front, with the controls outside. After all these years of my chips suffering. Now they're all kool.

Great quality!