DC powered USB hubs and 12V power hubs - …
2017-11-25 · A lot of powered usb hubs are only 5v and the power supply that comes with them steps the voltage from 240 to 5v, so the person that says that the power supply for these 5v hubs steps is down to 12v and then the USB hub itself steps that down again to 5v is completely WRONG... the hub itself is just that, a hub that splits the USB signal.