The section on the USB PD protocol, and how it relates to the Fuji X-T3 camera, has been extensively re-written, in my “Powering the X-T3” guide. I have added some more graphics, and tried to make the PD exposition more “graspable”, while also removing information that wasn’t strictly necessary, to understand the X-T3 context. Please have a look!
Icarus' Fate Fotoatelier . . . The Gnosis of Light, the Praxis of Glass 