Инструкция по эксплуатации Dell OptiPlex 745 — страница 19

Quick Reference Guide

Removing the Computer Cover

CAUTION:

Before you begin any of the procedures in this section follow the safety instructions in the Product

Information Guide.

CAUTION:

To guard against electrical shock always unplug your computer from the electrical outlet before removing the cover.

link integrity light

• Green A good connection exists between a 10-Mbps network and the computer.

- Orange A good connection exists between a 100-Mbps network and the computer.

- Yellow A good connection exists between a 1000-Mbps (1-Gbps) network and the computer.

• Off The computer is not detecting a physical connection to the network or the network controller is turned off in system setup.

network adapter

To attach your computer to a network or broadband device connect one end 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 the back panel of 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 a network connector card use the connector on the card.

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.

network activity light

The amber light flashes 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.

line-out connector

Use the green line-out connector to attach an amplified speaker set.

line-in microphone connector

Use the blue and pink line-in microphone connector to attach a record/playback device such as a cassette player CD player or VCR.; or a personal computer microphone for voice or musical input into a sound or telephony program.

USB connectors (5)

Use the back USB connectors for devices that typically remain connected such as printers and keyboards.

serial connector

Connect a serial device such as a handheld device to the serial connector.

video connector

If you have a DVI-compatible monitor plug the cable from your monitor into the white connector on the back panel.

If you have a VGA monitor see "Connecting a VGA Monitor" in your computer User’s Guide.

power connector

The connector for the power adapter.

diagnostic lights

See "Diagnostic Lights" on page 50 for a description of light codes that can help you troubleshoot problems with your computer.