The "problem" with dc jacks is you have to know what voltage something needs, maybe years after your or someone else built it. With usb-c you might have to reme

The "problem" with dc jacks is you have to know what voltage something needs, maybe years after your or someone else built it. With usb-c you might have to remember that it needs a power supply with 15V support, but it won't let out the magic smoke if you chose the wrong one.