DaoBellini6 years ago000Hello, I just noticed that the radiator is not turning???? Normal??Show in original language (German)pdk4u69696 years ago+440 Helpful answeryes, it is normal, it only turns when there is enough load.Show in original language (German)CommentAnonymous6 years ago000The USB port has a small push-button switch for testing the power supply unit or fan.Show in original language (German)Comment