In normal operation the module’s output is connected to the standard Ethernet or parallel port of any HP PCL or compatible printer and its input is connected to the printers data source.
When the resources are needed for secure check printing, the card is plugged into the module. After verification the resources in the card are automatically loaded into the printer.
When secure check printing is complete and the card is removed, all resources previously loaded into the printer are automatically deleted. Printing is unaffected by the module because it is transparent to all host data streams.