Is the official PoE hat compatible with the Raspberry Pi 4 in all ways including shutting down?
With a Raspberry Pi 3B+ and PoE hat , 'shutdown -h now' powers offs the device and the device stays off. However, with a Raspberry Pi 4 2GB and PoE hat, the device shuts down for a second or so and then starts back up. This has been tested with several Raspberry Pi 3B+ and recent PoE hats, but only one Raspberry Pi 4 2GB.
Thank you