hardware system

Port used for serial communication.

Universal Asynchronous Receiver-Transmitter.

Console connection using serial communication.

Hardware interface used for troubleshooting.

Timer that triggers a reset if software fails to respond.

Circuit that resets a system if it becomes unresponsive.

Chip collecting physical hardware measurements.

Tracking temperatures, voltages, fans, and other hardware conditions.

Switching to a backup resource after a failure.

Duplicate resources providing continued operation after failure.