Review on 4Pcs WINSINN 30Mm 5V RGB USB LED Colorful 3D Printer Micro Fan Hydraulic Bearing Brushless Cooling 30Mmx10Mm 2PIN by Cristofer Cejudo

I'm building a wearable PC using a super tiny NUC and before I improved my power efficiency I was going to use these to cool the battery, but now I'm just cooling the NUC which mostly relied on passive cooling - not anymore! It used to get incredibly warm, but with these glowing wonders it's as cool as the room I walk around in.I have to get my ear within a few inches of them to hear them at all, and they definitely blow air. One of the cables was slightly loose out of the box but I cleaned it up. They're not the best quality, but you're getting RGB fans at a unique size.I think the only real downsides are the USB cable length is a bit longer than I think is necessary, and the fact that the rotating colors can't be controlled in any way at all as they are not addressable or anything, they just constantly change. Still, totally worth it if this is what you're looking for at a tiny size.