Using this module, I modify many broken switches that cannot control fans and many broken charger fans whose circuits are not available in the market. I replace it in charger fans, solar fans, and IPS fans and make all fans functional. And when I modify and give the fans to their owners by replacing this voltage regulator module, they are very happy to see it because they can control the speed of the motor as much as they need, so they are very happy and tell me that it is much better than before.