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I needed to add another case fan to an already built system and didn't want to pull it all apart to get to the motherboard fan headers. This was the perfect solution - it draws power from a spare SATA connection and controls a PWM fan. It's small enough to stick out of sight somewhere inside the case and forget about.
In my case I didn't connect the PWM passthrough lead to the motherboard, I only had power going in. The NA-FC1 generated a PWM signal and the fan works fine. Tested with both Noctua and BeQuiet PWM fans.
Like everything Noctua, it's not cheap but you definitely get what you pay for.
Recently purchased a Xeon deskside server (Fujitsu TX1310) for experimenting with virtualisation technology at home, the only place we had room for the server was in the living room and even with bios fan control set to minimal it was too loud. We purchased some noctua fans to try and quieten the server but the server fan control would then ramp the fans up and slow them down every few seconds causing an annoying "woooo" sound every five seconds or so making the machine sound like it was haunted. Purchased these fan controllers and adjusted them down and now the server is finally silent.
I installed this to control the speed of a PC cooling fan which I have installed in a biltong dryer to replace the ridiculously noisy fan that came with it originally. It was easy to install, works smoothly and is perfect for the job.
Honestly wouldn't be without this now. Using it to control 3 x NF-A14 3000rpm industrial PPC fans. When connected to a 4pin PWM fan header on the motherboard it picks up the fan curve and there is a dial to control the total output of the device. I have near silent operation of the some serious fans when using the computer as a desktop and have used the dial to find the sweet spot when gaming. Using the controller seems to have aloud me to get slower low end speeds than the motherboard could deliver. Check your Motherboard manual and see it the system fan connectors are true PWN, if not you might need to get an extra splitter to share the fan curve from the cpu header.
Purchased to deal with Noctua fans in a Supermicro chassis that would JUST NOT SHUT UP! The Supermicro board doesn’t seem to be able to cope with the fact that premium fans spin slowly, so it keeps interpreting this as a failure and boosting the other fan speeds to compensate, leading to a continuous up and down, up and down, up and down of the fans - incredibly annoying.
Installing the fan controller gives you the option to site it between the motherboard fan controller and the fans, and “tone down” the motherboard fan signals. This leads to a much more balanced and quet operation, without compromising cooling performance.
Have you ever had the problem of wanting more fans into your pc, and havent enough headers on your motherboard, and if you plug the fans directly into a molex/sata lead from your powers supply they will spin full speed all the time without any way of controlling them? This little device solves that problem right away! easy to install, set up, and makes your PC a lot quieter! yes you have to pay for this, but Im sure that it will prolong the life of your fans, as you can significantly reduce the RPM and workload of them! Made by Noctua, to me (and countless others) are one of the best, if not the best company for PC fans/cpu coolers, you are getting a useful piece of equipment that is very well built, and is a must for anyone who has cooling issues! The control unit, is small, well hidden and takes literally minutes to install and set up! Rather than "overload" each CPU header with multiple "Y" connectors, I can have piece of mind that I know that my motherboard isnt being overloaded! Its ideal to use with Noctuas' Industrial fans, as they use more power than the "normal fans". I can control 3 of the 3000rpm fans so you can not hear them! cant recommend this device enough, should of got one years ago!
This reminds me of the old days of building PCs when we would install the biggest and loudest CPU cooler fan to brag about but then regret the noise level. We'd then shop around buying PWM gadgets that came with a variable resistor to help reduce the fan speed, but they'd often require more splitters and were of dubious quality. This Noctua kit comes with the right amount of splitters to get going and is very good quality, only the outward power connection seems a tiny bit loose and a splitter once detached without me realising. All in all Perfect.
Very specific use. Not for everyone. 1. You must have a PWM signal. 2. Your fans must be PWM. 3. Your PWM control is not satisfying you. Either you want to maintain a minimum RPMs or you want to reduce maximum RPMs. Only if you meet the 3 conditions THAN you can benefit from this. Otherwise use a simple PWM splitter or MB header and control appropriately with software.
Don't buy it thinking you can plug this to 12V and control PWM fans with the knob, that doesn't work. It doesn't generate PWM signal only overwrites the original.
Sometimes, particularly if you have a non-standard fan configuration, or if your motherboard doesn't support PWM speed control, you may want to step in to manually control your fans' speed. the options here are: 3-pin fan connector - you can set an absolute fan speed; 4-pin connector - you can step down the speed of your fans while leaving them under the control of your motherboard. There's also a "non-stop" button which prevents the fan from spinning down completely.
It's very easy to fit this little device electrically (it comes with suitable cables), although you need to find somewhere in the case to place it. It does the job really well, and although it's no substitute for a BIOS with proper fan control it's a good substitute if you're confident you know what fan speeds you actually need.
Noctua make lovely cooling fans. This little device is hardly as lovely, but it is very practical.
Have an HPE ML30 server with a very noisy CPU fan. Tried replacing that with a silent Noctua - but when the ambient temperature falls too low - the fan spins so slowly - it triggers an automatic shutdown.
This 4-pin PWN fan controller clips between the motherboard, fan power supply and the original HP CPU fan - and makes things almost silent. It also 'tricks' the motherboard into thinking the fan is still cranked right up - so no shutdowns. Problem solved. Brilliant piece of kit - well done Noctua!