DELL inspiron 4100 User Manual

Ports and Connector Pin-Outs: Dell Inspiron 4100

Use the 9-pin serial connector to attach a serial device to the computer. The serial connector passes 

data in serial format (1 bit at a time over one line). This connector supports a variety of devices, 

including a serial mouse, that require serial data transmission. If you reconfigure your hardware, you 

may need pin number and signal information for the serial connector.

 

1

DCD

I

Data carrier detect

2

RXDA

I

Receive data

3

TXDA

O

Transmit data

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 Frame ground

Use the 25-hole parallel connector to attach a parallel device to the computer. The parallel connector is 

used primarily for printers. The parallel connector transmits data in parallel format, where 8 data bits 

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