IBM IntelliStation M Pro 6230, Руководство пользователя, Страница: 39 / 166

Using audio features
Your computer has an integrated audio controller that supports Sound Blaster
applications. Your computer also has a single internal speaker and three types of
audio connectors. Using the audio controller, you can record and play back sound
and music to enhance multimedia applications. Optionally, you can connect external
speakers to the line-out connector to provide improved sound with multimedia
applications.
The audio connectors in your computer are 3.5 mm (0.125-in.) mini-jacks. For the
location of the audio connectors, see “Input/output connectors” on page 69.
Line in
This connector accepts audio signals into the computer sound system from
external devices, such as the line output from a stereo, television, or a
musical instrument. One line-in connector is on the rear of the computer.
Line out
This connector sends audio signals from the computer to external devices,
such as speakers with built-in amplifiers, headphones, multimedia
keyboards, or the audio line-in jack on a stereo system. Line-out connectors
are on both the front and the rear of the computer.
Microphone
This connector is used to connect a microphone to your computer when
you want to record voice or other sounds on the hard disk. With a
microphone attached to the computer, you can also use speech recognition
software. Microphone connectors are on both the front and the rear of the
computer.
Using security features
To deter unauthorized use of your computer, you can use anti-intrusion features and
other security features that are provided with your computer.
Anti-intrusion features
IBM anti-intrusion features help protect against the theft of computer components,
such as the microprocessor, system memory modules, or hard disk drives.
A cover lock is built into your computer to prevent the cover from being removed.
Two identical keys for the cover lock are also supplied. A tag attached to the keys
has the key serial number and the address of the key manufacturer.
Important: Keep the key-code number, manufacturer address, and phone number
in a safe place. Because locksmiths are not authorized to duplicate
cover-lock keys, you must order replacement keys from the key
manufacturer. You will need the key code when ordering replacement
keys.
You can set the chassis-intrusion detector switch inside the computer to alert the
network administrator each time the computer cover is removed. For more
information about setting the chassis-intrusion alert, see Chapter 3, “Configuring the
computer,” on page 23.
Chapter 2. Operating the computer
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