GDSTIME USB Blower Fan Small 60mm x 15mm, Quiet 3 Speeds, Adjustable Mini 5V Brushless DC Cooling Fans for Helmet Laptop 3D Printer Ventilaiton

I happen to love centrifugal cooling fans because they move air in a very controlled manner and do so very quietly. I use these on various applications within my networking and equipment racks to keep things from overheating and they just hum along very smoothly and quietly even at full blast. Only caveat is you get lower CFM for the size of the fan compared to a box fan but because the air is directed in such a concentrated way it solves thermal issues from specific processors far better than a standard box fan and without the crazy noise and vibration.

These are great little fans. They will surprise you with the huge airflow. They work great with solar panels. Low power, and they have nice mounting holes.

I put this in my travel kit to create some air circulation in hotel rooms. It's compact and the "blower" nature is perfect for creating a little bit of circulation. Putting some hot glue on the wires to keep them secure / safe, especially if it will be moved around, is a good idea. And in my use case, I used 1/8" neoprene to line the back to keep it from moving and making noise during use. I'm not using the speed controller. Even on high, the sound is fine. In fact, in my use case, having some "white noise" is a benefit to mask other hotel guests. BT recommended

The fan works, moves a satisfactory amount of air, and makes a modest amount of noise. It is slightly unbalanced, but it should not be an issue for most applications. I was disappointed that the speed control was missing, even though it is pictures and listed in the description.

Good product, as described. Mine came broken and the company was very responsive and got everything resolved same day. Super awesome !