The value of prtInputIndex corresponding to the input
subunit which will be used when this input subunit is emptied and
the timeout specified by prtInputMediaLoadTimeout expires. A
value of zero(0) indicates that auto input switching will not
occur when this input subunit is emptied. If the timeout
specified by prtInputLoadMediaTimeout expires and this value is
zero(0), the job will be aborted. A value of (-1) means other.
The value (-2) means 'unknown' and specifically indicates that an
implementation specific method will determine the next input
subunit to use at the time this subunit is emptied and the
timeout expires. The value(-3) means input switching is not
supported for this subunit.
Additional information:
This object will return -2, meaning that
a product-specific tray switching action will occur.