If the 'OPOS' option was selected in the Display field,
you must enter the OPOS driver name for the display here.
Both the Programmatic ID and the Logical Device Name can be used as the Device Name for the line
display. You can find the Programmatic ID and the Logical Device Name in the registry:
HKEY_LOCAL_MACHINE\SOFTWARE\OLEforRetail\ServiceOPOS\