SinLoon 4 Knob Cooling Fan Speed Controller PC 8 Channels 12V Fan Hub for CPU Case HDD VGA PWM PCI Bracket- 4Pin Interface Power Supply (4 Pin 4Knob)

Nice fan control 👌 👍 👏 I have used it since the 90s

Love this little thing. Put into a raspberry pi mini case I custom built and it really kicked in the fans to overdrive.

So I’ve gotten two of these for different projects, they are very reliable in my opinion. Build quality is questionable, but haven’t had anything die yet, one has been in 24/7 operation on a board with poor fan control for over a year (still going) and the other was used in a situation to power fans that could possibly burn out a fan header on a board.If you are looking at having a lot of high RPM fans, you may need to look into one of these to save your board. Likely since it using a full dedicated power cable vs distributed power on a mother board, you probably would be able to get away with some other high wattage fans. Tho results may vary.If you are trying to make a Tesla Gpu computer for example and need to power a absurd high wattage rpm fan but want it controlled in some fashion, I believe this will help. Most fans that are capable of cooling these types of cards will likely burn out headers more quickly.Drawbacks, PCIE bracket is a bit short or won’t hook into cases, it will sometimes swivel on the screw when changing dial position. Another one, all the dials are not all equal, when I say this, the printed line on the dial when twisted to 0%, they are all in different spots. (Speculative) My guess they were glued on but not made aware on what position they were in. They do the job just fine, just know the line on the dial means nothing if this is the case.

works great...quick delivery...Thanks

It's been working without a hitch for about a year now. No complaints. I bought it because I upgraded CPU, which called for a new motherboard, and I cheaped out on the motherboard, which didn't have enought fan headers to support all my fans, so this device allowed me to manually set a constant speed for my intake fans because I want a positive air pression inside my PC to help push out any dust that might want to settle inside.

EDIT: IT MELTED! Lasted 6 months and one of the circuits is shot... it smelled bad as it burned and because it quit it overheated one of my computers. Reducing 4 stars to 2. Replacing this unit with a home-brew proper 4-pin PWN fan controller with 555 timer @25khz, the way its supposed to be done.This is NOT a true 4-pin PWM fan controller.... don't be fooled.... with that said it still does a decent job of adjusting fan speeds with pulses directly on the 12V line. However, any fans directly connected to 12V runs much faster than this unit will as turned up to full speed. So this is not the best if you really want to run those fans up fast, then you're better off disconnecting this controller and going direct to power. The unit does run a little warm (burns fingers to the touch.. OUCH! But not burning itself up nor taking my skin off. I think 4 stars is fair. If it were real PWM or allowed fans to run at full speed I'd give it 5!

So far it works on my computer and I have no complaints on the function. 2 ports per knob.I've read that it can start smoking from overheating. That's usually caused when you don't have the fans turned all the way up, hence the resistors resists the electricity and gets hot and I guess wiull eventually start causing smoke. But I guess that defeats the purpose of having knobs if you don't have the option to control your fan speed.Some things I don't like about this product is that the knobs are cheap metal caps with some plastic fittings inside to hold onto the turning pin. When you receive the product, none of the knobs are pointing the same, hence you need to pull them all out and align it yourself. The metal bracket is also touching one of the screws, which is touching one of the circuit part. I simply painted a clear acrylic over it to prevent any connection from the circuits...Overall, this works and fits snuggly behind my PC since my pc doesn't have a CD or floppy drive slot for any other options. You do need to plan ahead and make sure your fans have long enough wires to run around the inside of your case and connect to this.

Yeah so I bought it to keep my gpu Temps somewhat low or lower than 81 while gaming by controlling the speeds of my fans without software. So far it has worked well. My temp has been at a steady 78 on gpu and a cool 50s on cpu. 2060s with I7-9700kf also a Be Quiet Hard Rock Pro.