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I/O Ports and Connectors 147

Figure B-2. Serial Connector Pin Numbers

Parallel Connector

The integrated parallel connector, intended primarily for use by printers that require data in

parallel format, uses a 25-pin D-subminiature connector on the system's back panel. The default

designation of the system's parallel connector is LPT1. If you add an expansion card containing a

parallel connector configured as LPT1 (IRQ7, I/O address 378h), use the System Setup program to

remap the integrated parallel connector. See "Using the System Setup Program" in the

User’s

Guide

. Figure B-3 illustrates the pin numbers for the parallel connector and Table B-3 defines the

pin assignments for the connector.

Figure B-3. Parallel Connector Pin Numbers

Table B-2. Serial Connector Pin Assignments

Pin Signal I/O Definition

1 DCD I Data carrier detect

2 SIN I Serial input

3 SOUT O Serial output

4 DTR O Data terminal ready

5 GND N/A Signal ground

6 DSR I Data set ready

7 RTS O Request to send

8 CTS I Clear to send

9 RI I Ring indicator

Shell N/A N/A Chassis ground

1 2 ... 142 143 144 145 146 147 148 149 150 151 152 ... 159 160

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Dell PowerEdge 1800 Guía para resolver problemas Pagina 147