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

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.

Works as designed (regulates all input voltages to 12V). however did not meet my need as i hoped it would be proportional to input voltage. My mistake not mfrg.

This is probably just a cable with a micro buck boost installed in the cable housing, but its perfect for testing fans and/or using it to power up a spare fan for a desktop cooling device. Only thing Id knock is the price.

There are a couple of comments re frail materials/build on this one, while I can see whats being referred to, and yes, the join on the fan connection end could be better finished, I really cant see where this would cause a problem with normal use. After all you should be treating any cabling gently and well. A USB 3 connection fired the PWM12 fan up and it certainly cooled the object(s) in its path!

Basically I purchased a little desk on Amazon so I could use my gaming laptop on the couch. The little desk had a cheap fan. I upgraded to a Noctua Fan and needed a way to power that fan by USB. Everything worked flawlessly. Ive only had it a short while so Ill update this review if it dies prematurely since I will be using it practically every day. I was surprised this product even existed but Im glad it does!

I got this product to use an extra 140mm pc fan on top of my Xbox Series X. This adapter provides 12v and the fan runs at full speed which is ideal for me. The Xbox is much cooler to the touch and I feel better than the internal parts are cooler too. I used an extra USB wall adapter which provides 2 amps at 5/12v.

I use a portable usb battery and one of my old computer fans with this cable to cool the inside my costume helmet. It works great.

Bought one and it worked well so bought more. All cables are working fine.

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.