Hi, I use this one: It has 12V with max. 3A. It matches the requirements, right? Thx for help!

Nobody out there, who has an idea? I checked the Voltage with a Multimeter. I have 12 V at the output, but the Fans are not turning.

Edit: This is a Problem with the Simhub Software if the Software is started and no Arduino is connected. It seems like the Software is searching for t...