USB C to DC barrel jacks...with USB PD voltage selection! We got a few samples of these very nifty USB C cables - there's a Type C plug on one end and a DC 2.5mm/2.1mm on the other. On the plug is etched a voltage and current range. inside is a USB C PD chip that negotiates to try and get the selected voltage and current out of a USB C power plug with Power Delivery management, and it works! we got 9V, 12V, 15V and 20V cables and tested it with our 3A test load and the cables had almost no drop.