This is a read-only SecondaryState object carrying supplementary status information for the PPS 16 Port Expansion Card that refines what its operational state alone would show. It is useful to an administrator because it can reveal transitional or qualified conditions on the PPS 16 Port Expansion Card, such as being in a testing or partially-degraded mode, that a plain up/down flag would hide. For example, after reseating the PPS 16 Port Expansion Card, the operator polls this value to confirm the card has cleared any lingering secondary condition before declaring it fully restored.