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

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.

Nice build quality, looks good, does its job so far. I used it to power regular case fans in my network cabinet. Much quieter than the muffing fans now.

Am using this to power a Noctua 120mm case fan to provide active cooling for my ASUS AC2900 Router. Works flawlessly. Couldnt be happier and am picking up another to have in my equipment arsenal.

Working pretty good with my 200x200 cooling fan (12V, 0.42A)

This is exactly what I wanted and exactly what I expected. Im using this to power a case fan that I no longer need and use for other purposes.

Had to use to power main cooling fan on PC when the water cooler control board failed.