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

When it works it works great, it steps the voltage up to properly use a 12V .25A static pressure fan and I appreciate that. Unfortunately its making extremely bad contact and only works with someting putting pressure on the leads. Annoying.

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

Tested out a few fans and a pump with this cable.

couldnt use did not receive working item

This works exactly as it’s described. I added a small cooling fan into the back of my entertainment center to cool my Xbox One X because it was in a rather enclosed space. The USB the three pin adapter allowed my to plug the fan into the back of my tv so now the fan only runs when my tv is on and the Xbox stays cool when I’m gaming. The construction of the cable is a little flimsy and would definitely not be hard to break. The heat shrink has already started to move around on the cable and I only touched it to install it. This would have been a five start review if not for the mediocre construction.

This is great!