If you're wondering whether the AutoPi CM4 device has a physical button for restarting it, the answer is yes.
The AutoPi CM4 features an I/O button that can be used to change the power state of the
device. This button can be found at the side shield of the device.
To restart the AutoPi CM4 using the I/O button, you can simply press and hold the button
for 3 sec or more until the device powers off. Then, release the button and
wait a moment before pressing it again to turn the device back on.
In addition to the I/O button, the AutoPi CM4 also features a set of LEDs that can be used
to monitor the status of the device and diagnose any issues that may arise.
You can learn more about the LED indicators and how to use them in the official documentation here.