The object supports the fault category of the IETF Power MIB [1]
pethPsePortDetectionStatus object. A textual description
containing more information about the nature of this fault is
provided by this object. Typically this will detail the precise
PoE hardware state which is causing the pethPsePortDetectionStatus
object to be in the 'fault' state.
It is a DisplayString of up to 255 characters.