AC Infinity MULTIFAN S5, Quiet Dual 80mm USB Fan, UL-Certified for Receiver DVR Playstation Xbox Computer Cabinet Cooling

Connected those to the TV usb output, one under the Android media box, and the other on top on a NUC (removed NUC top cover), it is so effective it brought NUC temperature during heavy tasks from 72c to 46c while remain silent. Highly recommended. (note the dual fan connection cable comes with a female usb provision for connecting another set of fan/fans)

Great product. A must have for custom home cinema

Airflow is weak

Silent and convenient. Using them to keep my amplifiers cool in the cabinet.

perfette! molto silenziose ed utilissime per raffreddare pc, laptop ed altre superfici che scaldano molto. le tre velocita' sono un must! superconsigliato

These fans come really nicely packaged, good instruction booklet, and feel very professional. The grills look great and have a nice professional logo on. The variable speed is great - on the low setting they are silent, and barely audible on medium. on Hi you can here a feint whir if you are near, but if they are in a AV cupboard you won't notice. They shift a fair bit of air given the low USB power. I wanted a couple of fans to use on a Biltong drying box I was making. these fitted the bill perfectly. Powered by a USB wall wart I had lying around, one fan blowing in, one fan extracting, with variable flow. I removed the grills and rubber feet which are easy to do, and had to fit a different air filter, which is a shame given the nice appearance of the fans! They fill my purpose spot on, and I would highly recommend them as they are good value and nicely made/packaged.

I bought these to cool my amplifier down in the summer time. Works perfectly. No wind noise from them at all! And they do a good job. Buy buy buy if you have a over heating problem in your amplifier. The only negative things are that the cord is quite stiff. And long. Otherwise perfect.

Very efficient and quality product

I just bought a used Onkyo TX-SR805 receiver already knowing that they run hot from reading reviews. When I arrived home I immediately set it up and liked the sound. Within 30 minutes I put my hand on the top of the receiver and could not believe how hot it was. You could fry an egg on it. I knew this was not good. I then noticed that the side vents, one on each side, housed a fan each. The fans were not working. I believe this is one of the reasons Onkyo has a reputation for very hot receivers, inefficient cooling system. Replacing them would probably not be cost effective. I purchased this set of fans from Amazon and set them up vertically at the rear of the receiver, one on the left and one on the right, to push the air towards the front of the receiver and out of the cabinet (I have an audio visual cabinet with doors. I keep the doors open). This setup produced cooling and the fans were powerful enough to push the air out of the cabinet but the cooling was only fair. I was not satisfied since the receiver top was still hot, though not as hot as before. I now proceeded to lay both fans on the hottest sections of the receiver venting the hot air out of the receiver and was amazed at the results. The receiver cooled down so much that when I touched the top of the receiver I felt no heat. I ran my hand across the top of the fans and I felt the hot air being drawn out completely. By the way the setting I have it on is HIGH. I didn't try medium or low since this receiver produced atomic heat. The receiver remained pretty cool with this second setup. I just purchased another set to stand up at the rear of the receiver (as was my first setup) to push the hot air forward away from the front of the receiver, as I plan to elevate on 4 columns (4 black pepper shakers from Dollartree-perfect size-about 1/8" taller than fans) my turntable. It remains pretty stable. As mentioned previously, I have my audio visual components (8 in total) enclosed in a cabinet with doors. There is an open back and the doors swing out and to the side and back, out of the way, making it perfect for my rig. Will probably update with photos once everything is in place. Definitely recommend these fans. Especially for the price. I was going to buy AC Infinity's more expensive setup with the 3 fans that lays on top of the receiver and vents out the rear but didn't want to spend $119 for it. I read in the reviews that it was a little noisy and that thermostat is inaccurate. Two sets of fans for $30 and 4 black pepper shakers from the Dollar tree (come in a set with salt) for a total of $34 Will actually do a better job because you are using 4 fans this way, which can be Daisy chained compared to only 3 fans with the $119 rig. As a former Marine we are taught to improvise and improvising can save beaucou bucks. Wishing you the best and God bless. UPDATE:. Just received the second set of fans and set them up at the rear of the receiver to push the air out of the front of the cabinet. Fan setting is on high for all the fans. Works marvelously! Haven't purchased the pepper shakers yet from Dollartree (was there today and forgot-set it up earlier with two of the shakers-one salt white and the other pepper black-work perfect!) so I have the turntable set up on empty medicine bottles. Supports the turntable steadily. Bottom of turntable is not hot as air extracted upwards from receiver vents is immediately being forced forward by rear fans and forced out of the front of the cabinet. These fans are GREATTT! I can feel the hot air being pushed out the front when I stand in front of the cabinet. Feels like a furnace is on. Really glad I found these on Amazon because this is really a great receiver and was concerned that it would sizzle out on me. Now I have to figure out how to hide the wiring on the floor. Pictures enclosed for viewing fan setup and turntable elevation. Wishing you all the best.