Printer Components1-10 v DocuPrint C20/NC20 User GuideInterface Connectors Your printer interface connectors are located on the backof the printer as shown in Figure 1.3 on page 1-11. Yourprinter comes equipped with a high speedStandard-Centronics IEEE 1284 B compliantBi-Directional parallel connector. The following optionalinterfaces are available:• A Tri-Port Interface Card to provide support for— LocalTalk— Serial RS-232C/RS422A— High speed infrared local connection.• An infrared adapter for use with the Tri-Port Interfaceto receive infrared beams from an IrDa-compatibleworkstation.• An External Ethernet Adapter— 10BaseT.