beautypg.com

Serial connector, Ps/2-compatible keyboard and mouse connectors, Serial connector autoconfiguration – Dell PowerEdge 1750 User Manual

Page 7

background image

 

Table B

-1

shows the icons used to label the connectors on the system.

 

Table B-1. I/O Connector Icon  

Serial Connector

 

Serial connectors support devices such as external modems, printers, and mice that require serial data transmission. The serial connector uses a 9-pin D-

subminiature connector.

Serial Connector Autoconfiguration

 

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.

 

 

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.

 

Figure B

-3

illustrates the pin numbers for the serial connector and

Table B

-2

defines the pin assignments for the connector.

Figure B-3. Serial Connector Pin Numbers

 

 

Table B-2. Serial Connector Pin Assignments  

PS/2-Compatible Keyboard and Mouse Connectors

Icon Connector

Serial connector

Mouse connector

Keyboard connector

Video connector

USB connector

NIC connector

RAC Ethernet connector

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.

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