Thanks, Kevin. That's good info that I didn't know. But my Pi4 is in a case where I can't see the LEDs. Jason's recent one-button shutdown video made me think it would be nice to add an external circuit which would power off the Pi after an appropriate delay. There have been quite a few times when I performed a shutdown and forgot to power off. Only to come back hours later and find that the Pi is still powered on.?
Tom??
Tom Workman