This read-only object reports the detailed operational status of a power supply, distinguishing categories like a failed built-in self-test, fan failure, over-temperature condition, or an open interlock. An administrator uses this specific fault code to know exactly what's wrong with a failing supply without needing to physically inspect it first. For example, seeing agentSwitchPowerSupplyStatus report fanFailure(4) tells the operator to check the supply's cooling fan specifically rather than assume a general hardware fault.