DickeRecorda525 months ago000What kind of mains connection is required for this KWM switch? None is supplied . Show in original language (German)ralfbarth25 months ago • purchased this product000purchased this product Helpful answerIt doesn't need one. It draws power via the USB port - I think. Even when the PC is switched off, the small blue LED at the top right lights up.Show in original language (German)Comment