I bought this on recommendation from Alex Ellis' blog. He evaluated several cooling options for the Pi 4. I found this to work very well for my use i.e. a small Linux desktop in my workshop. I had cooling issues when I got my first Pi 4 but not since I installed this fan. All in all it works very well. I like the multicolored LED. It doesn't have to have that feature, but it makes it more appealing when it's not there. The fan is quiet enough for me, but my workshop isn't very quiet. I can't even hear the fan. I'm only deducting one star because of the price. Actually, I wish I could only dock half a star because the thing is built pretty well. However, this isn't something you want to buy if you need to group multiple Pis. This is getting pretty expensive. Especially when you consider other items that need to be purchased. If you use the Pi 4 as a desktop and don't plan on connecting anything to it, I would definitely recommend this.
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