An enumerated code naming the specific power-supply condition that triggered a notification, such as a module being inserted or removed, or input voltage crossing a critical threshold. It lets the admin distinguish a routine module swap from an actual electrical fault without needing to check the chassis physically. A trap with csOrionPowerSupplyEvent equal to supplyModuleRemoved(2) tells an admin a PSU was physically pulled, versus an input-voltage event which would indicate a brownout on that feed.