“The official 27W psu works flawlessly to power the pi5. However, as I understand itm it infringes the PD industry standards. A PD psu shouldny be able to provide 5V at 5A. So, not sure why they didnt stick to the standards and design the pi5 to accept higher power at hight voltages. The issue is you have to buy this particular psu or you will have issues.”