Review on Keep Your 3D Printer Cool With WINSINN 50Mm Fans - Pack Of 5, 24V Hydraulic Bearing, Brushless Cooling And 2PIN Connection by Ronnie Segobiano

The wires are backwards. I included a picture, comparing one of these to another fan I have.It does not appear that I have a bad batch. The pictures on multiple fan listings by Winsinn show that all of them have the same orientation. And, looking at other fans, where I can see the wiring of the connectors, these are backwards compared to all the others.Bizarre that they got this wrong. Fan headers have been standardized for a long time. Am I wrong about this? Are there headers that are wired the other way?I was able to work the pins out and swap them.The fans do move more air than some other fans this size that I have. They're not silent, but they're reasonably quiet.Edit: I upped it to three stars. The seller offered to send a new set. No word on whether the wires would be correct. I did not take them up on it. But, it was such a simple fix, and they do move a lot of air.To swap the wires, there's a little barb on the connector poking up on the exposed side, that you can mash down with a sharp point. Then, pry that barb back up 20 degrees before inserting it in the other side.