Raspberry Pi 4 Fan, iUniker Raspberry Pi Cooling Fan 30x30x7mm Brushless CPU Cooling Fan for Raspberry Pi 4 Model B, 3 B+, Pi 3, Pi 2, Pi 1 B+, RetroFlag NESPI Case(2-Pack)

Following a power outage, the fan of my Labist Raspberry Pi case started making a lot of noise. I don’t know if the power outage has anything to do with this, but this fan is the perfect replacement for the original one in the Labist kit. It is a bit pricey and I found out a bit too late that I could have ordered a complete case for about the same price. I don’t really care as long as the fan last longer than the original one (3 months).

Fit perfectly and works cooling the circuit board quietly and efficiently.

Perfect fit, wire cover is a stiffer plastic but it works, just have to be careful when routing.

Fans are functional but decently loud when ran at 5v, when ran using 3.3v they can still be audibly loud (louder then 20db) since the blade seem unbalanced and will start to randomly vibrate or grind on its own chassis. (sometimes very loudly).giving the fan a bit of a jiggle can straighten it out making it quiet again for a little bit, working but not good fans.These results are with different attempts and styles of mounting (at 5v and 3.3) with and without the included spacer nuts. i ended up using a lot more expensive but quiet higher quality Noctua NF-A4X10-FLX 5V. its a larger width but with a little work mounted fine.

Used in the Retroflag SuperPi case and it works perfectly. It's very quiet and moves quite a bit of air for its size. Not a ton, but enough that it will help. The wires were of the perfect length. Very happy with this.Update: I'm glad I went with the two pack. It turns out that the first fan was bad. It started making odd noises, like the hub is rubbing inside, and though I thought it pulled a good amount of air, the second one pulls a lot more. I've never used one of these small fans, so what I thought was a good amount wasn't. I put the second one and it works as it should.I'm going to contact iUniker. I don't know that they will actually do anything for a $4 fan, but we'll see. Took two stars off because of the issue. The second one does work very well, though...so far.Update 2. iUniker's response to my contact has been great and the issue was resolved to my satisfaction. I'm adding a star back on because of it. They're definitely a company that cares about their customers.