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Serial Connector Autoconfiguration

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The default designation of the integrated serial connector is COM1. When you add an expansion card containing a serial connector that has the same

designation as the integrated connector, the system's autoconfiguration feature remaps (reassigns) the integrated serial connector to the next available

designation. Both the new and the remapped COM connectors share the same IRQ setting. COM1 and COM3 share IRQ4, while COM2 and COM4 share IRQ3.

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Before adding a card that remaps the COM connectors, check the documentation that came with the software to make sure that the software can

accommodate the new COM connector designation.

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FigureB-2 illustrates the pin numbers for the serial connector and TableB-2 defines the pin assignments for the connector.

Figure B-2. Serial Connector Pin Numbers

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Table B-2.SerialConnectorPinAssignments

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PS/2-Compatible Keyboard and Mouse Connectors

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The PS/2-compatible keyboard and mouse cables attach to 6-pin, miniature DIN connectors. FigureB-3 illustrates the pin numbers for these connectors and

TableB-3 defines the pin assignments for these connectors.

Figure B-3. PS/2-Compatible Keyboard and Mouse Connector Pin Numbers

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Table B-3.KeyboardandMouseConnectorPinAssignments

NOTE: If two COM connectors share an IRQ setting, you may not be able to use them both at the same time. In addition, if you install one or more

expansion cards with serial connectors designated as COM1 and COM3, the integrated serial connector is disabled.

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

Chassis ground

Signal

I/O

Definition

1

KBDATA or MFDATA

I/O

Keyboard data or mouse data

2

NC

N/A

No connection

3

GND

N/A

Signal ground

1 2 3 4 5 6 7 8 9 10 11 12 ... 75 76

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Dell PowerEdge 750 Guía para resolver problemas Pagina 7

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