Printronix L5020 - Manual (Page 211)

Host Interfaces
213
Host Interfaces
NOTE: Dataproducts parallel interface requires an optional
adapter cable.
Emulations
Standard Centronics parallel,
Dataproducts parallel, serial
RS-232/422
Optional IBM coax and twinax
Standard LinePrinter Plus
Optional PCL5/LP+
PCL5/PGL
PCL5/VGL
IGP/VGL
IGP/PGL
IPDS