Dell Precision 390: 11 keyboard connector If you have a standard keyboard, plug it into the purple keyboard connector.

11 keyboard connector If you have a standard keyboard, plug it into the purple keyboard connector.: Dell Precision 390

Table of contents

4 network adapter

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

connector

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.

5 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.

6 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.

7 line-out connector Use the green line-out connector to attach headphones and most speakers

with integrated amplifiers.

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

8 USB 2.0 connectors (2) Use the back USB connectors for devices that typically remain connected,

such as printers and keyboards.

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.

9 USB 2.0 connectors (3) Use the back USB connectors for devices that typically remain connected,

such as printers and keyboards.

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.

10 serial connector Connect a serial device, such as a handheld device, to the serial port. The default

designations are COM1 for serial connector 1 and COM2 for the optional serial

connector 2.

For more information, see "System Setup Options" in the User’s Guide

.

11 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.

26 Quick Reference Guide