4 x 120mm Fan DC 220V Computer Fan with AC 220V Powered 4V-12V Adjustable Speed Control For Laptop Cabinet Workstation Server Ventilation Exhaust replacement

This 120mm fan comes with everything you need.speed control with ON/OFFnuts and boltsFan guardPower supply with 3 pin plug

Bought this to aid cooling on my home miner. Powerful, quiet and have worked flawlessly for a month of constant use so far.Edit: 4 months after purchase and being on constantly and still working flawlessly.

Very good fans, a little expensive tho but If you don't want to put things together yourself they are great. I have mine setup on a marine fish tank for cooling

So far, so good. I'm using my fan for a more unconventional purpose, as a component in my custom built humidifier, which supplies mist and fresh air to my gourmet mushroom fruiting chamber.The speed control function is really important for dialling in the correct amount of humidity and air circulation, and for this purpose the fan is working perfectly.My fan is automatically switched on for a minute or two every 10 minutes via a hygrometer, so I can't comment on how it performs during continuous function, but in terms of controllability it's fantastic.The fan gets a little noisy when it's cranked up to maximum but this isn't an issue for me as the speed is set at around 20%. At this level it's barely noticeable. It's a fan...... they get noisy when they run at speed so no star deducted for this. Think aeroplane propeller!The speed control unit is nice and compact and has mounting fixtures to attach it to a wall, desk, component board etc. You'll need to supply your own screws/wall plugs if you decide to use this feature.All in all, it's a nice little product. Hopefully it will have some decent longevity.

Fast delivery via amazon Prime,This fan is quite powerful for the size, the speed control unit is a very useful addition, works very well and so far has been been reliable.

Works really well, does the job, in my case cooling solar panel inverter in loft

Great little fan. Runs pretty much silent at lower speeds. There is a little noise at higher speeds but most of it is due to the blades rather than the motor. It moves a lot of air too. Used it as an air mover in the top of a radiator cover to push more heat into a room. It did the job brilliantly. The long lead it comes with is a real bonus too.

Used this for extraction on my 3D printer enclosure. Works great with variable speed.

Ho acquistato questo prodotto per piazzarlo sotto un router “Fritz”. Costruito con criterio e buon materiale, fa bene il suo lavoro. Un unico neo: se lo si tiene ad un regime elevato di rotazione delle 4 ventole, almeno per me, risulta un po’ troppo rumoroso…ma le ventole si possono regolare, per fortuna. La 5^ stella non l’ho attribuita proprio per quest’ultimo “difetto”.