The is an incomplete assessment because the cable itself plays an active role here via USB-IF required electronic marker. [1] Not all cables have suitable inte

The is an incomplete assessment because the cable itself plays an active role here via USB-IF required electronic marker. [1] Not all cables have suitable internal wiring or receptacles capable of handling either higher voltage or amperage required. The ability to transmit 60W or 100W was a much later addition to the specification. In fact USB-C PD 3.1 / EPR supports 240W (48V at 5A) as of recently. This is why the in-cable e-marker was added to the specification: so the cable could indicate whether it was designed to handle higher voltages and currents without catching fire. In modern USB-C power delivery, it is the source, the sink and the cable that determine how much power is supplied. [1] https://web.archive.org/web/20170816061107/http://www.usb.org/developers/presentations/USB_DevDays_Hong_Kong_2016_-_USB_PD.pdf https://web.archive.org/web/20170816061107/http://www.usb.or... (p. 42)