Dell W5300 Workgroup Laser Printer - Manual (Page 109)

PS SmartSwitch ; Printer Language
PS SmartSwitch
Purpose:
To configure the printer so it automatically switches to PostScript emulation when a print job received
through the USB port requires it, regardless of the default printer language.
Values:
On* Printer examines data on the USB interface and selects PostScript emulation if the data indicates
that is the required printer language.
Off Printer does not examine the incoming data. The printer uses PCL emulation to process the job if PCL
SmartSwitch is On, or uses the default printer language specified in the Setup Menu if PCL
SmartSwitch is Off.
See also:
PCL SmartSwitch ; Printer Language
NPA Mode
Purpose:
To specify whether the printer performs the special processing required for bidirectional communication,
following the conventions defined in the Network Printing Alliance (NPA) Protocol.
Values:
On Printer performs NPA processing. If data is not in NPA format, it is rejected as bad data.
Off Printer does not perform NPA processing.
Auto* Printer examines the data to determine the format and then processes it appropriately.
NOTE: Changing this menu item automatically resets the printer.
PS SmartSwitch ; Printer Language
USB Buffer
Purpose: