i'm looking to get a newer pc and looking at ebay for now to save few $$ anyway, they all seem to be missing the power supply's. so i see most of the new pcs all have 1 or 2 ports called usb-c ports and most of those ports seem to be able to send out control for a extra monitor and for a lan network connection, and to take in power to run the pc. but what i need to find out is this? are all the new pcs that use this port for power input do they have the same volts? when i check the specs on the hp they are 19 volts and it looks like the best i get from dell is 12 volts but they plug into the pc power port but what about the usb-c port are they the same volts as the power supply would be?