Datamax-O'Neil E-Class Mark III 3xxxxxxx Operator’s Manual - Manual (Page 10)

4 Chapter 2 – Printer Setup
2.2.2 Interface Connections
The printer can be connected to the host system via the parallel, serial, Ethernet or USB ports.
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Before connecting interface cables to the printer, ensure that the Power Switch is in the OFF (O) position.
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 Ethernet Port
 USB Port
 Serial Port
 Parallel Port
Cable Requirements
Choose the correct cable when interfacing the printer to the host:
 The Parallel Port (optional) supports parallel communications via a 36-pin male mini-Centronics 
connector. Bi-directional communications (forward and reverse channels) is supported when an
IEEE 1284 compliant cable and supporting host software is used.
 The Ethernet Port (optional) supports Wired LAN communications (see Appendix B for
information).
 The Serial Port supports RS-232C communications via a DB-9 connector with specific pin-outs
(interface cable part numbers and pin-outs are given below; contact your reseller to order). Serial
port settings are menu-selectable and must match the host settings.
Part # 32-2483-01 Part # 32-2301-01
 The USB Port supports high-speed serial communications and requires a standard USB interface
cable.
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The printer automatically establishes communications with the first port through which valid data is
received. Afterward, a timeout period must be exceeded (or power must be cycled OFF and ON) to change
the established communications port.