Dell Precision 490 Desktop: 11 serial connector Connect a serial device, such as a handheld device, to the serial port. If necessary,

11 serial connector Connect a serial device, such as a handheld device, to the serial port. If necessary,: Dell Precision 490 Desktop

Table of contents

5 network adapter

To attach your computer to a network or broadband device, connect one end

connector

of a network cable to either a network jack or your network or broadband device.

Connect the other end of the network cable to the network adapter connector

on your computer. A click indicates that the network cable has been

securely attached.

NOTE: Do not plug a telephone cable into the network connector.

On computers with an additional network connector card, use the connectors

on the card and on the back of the computer when setting up multiple network

connections (such as a separate intra- and extranet).

It is recommended that you use Category 5 wiring and connectors for your

network. If you must use Category 3 wiring, force the network speed to 10 Mbps

to ensure reliable operation.

6 network activity light Flashes a yellow light when the computer is transmitting or receiving network

data. A high volume of network traffic may make this light appear to be in a

steady "on" state.

7 USB 2.0 connectors (5) It is recommended that you use the front USB connectors for devices that you

connect occasionally, such as flash memory keys or cameras, or for bootable

USB devices.

Use the back USB connectors for devices that typically remain connected,

such as printers and keyboards.

8 PS/2 keyboard connector If you have a standard keyboard, plug it into the purple keyboard connector.

If you have a USB keyboard, plug it into a USB connector.

9 line-in connector Use the blue line-in connector to attach a record/playback device such

as a cassette player, CD player, or VCR.

On computers with a sound card, use the connector on the card.

10 serial connector Connect a serial device, such as a handheld device, to the serial port. If necessary,

the address for this port can be modified through system setup. See your

User’s Guide for more information.

11 serial connector Connect a serial device, such as a handheld device, to the serial port. If necessary,

the address for this port can be modified through system setup. See your

User’s Guide for more information.

Quick Reference Guide 23