CRJ Full Speed 12V Voltage Step-Up USB to 3-Pin and 4-Pin PC Fan Sleeved Power Adapter Cable

I greatly underestimated how fast or loud powering a 120mm case fan with this would be. The cable itself isn’t anything special and feels sturdy enough. Most importantly it does what it is supposed to do. So if you need high rpm, high noise, 24/7 fan operation you cant go wrong.

I use it to test various 12v pc fans. Also used it to prime a pump on a liquid cooling computer and bleed the air out of the system.

Using with 12v fan to silent a very noisy network switch. Works great and has been working great for over a month now, no issues and good build quality.

I bought this to use with a 12 volt dehumidifying telescope fan. It works as expected and the fan runs at full speed.

I needed a 120mm fan for my Intel NUC. I 3D printed a custom case and all, but needed a way to power the fan. This works perfectly!

Works well, would be better if it had a dial to adjust speed for PWM fans. The usb plug is large and sticks out when I connect this to my dongle, but overall it works as intended.