IBM 92296GU User Guide - Page 28

Using, audio, features, security, Anti-intrusion

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If you are using a cathode ray tube (CRT) monitor, set the monitor for the highest noninterlaced refresh rate that it supports. If the monitor complies with the Video Electronics Standards Association (VESA) display data channel (DDC) standard, it is probably already set to the highest refresh rate the monitor and video controller support. If you are not sure whether the monitor is DDC-compliant, see the documentation that comes with the monitor. If you are using a flat-panel monitor, the refresh rate does not have to be set to the highest noninterlaced refresh rate that the monitor supports. Flat-panel monitors produce flicker-free images even when they are operating at a minimum 60 Hz noninterlaced rate. If you have a dual-monitor video adapter, see the video adapter device-driver readme file and documentation for more information about enabling dual monitors. Using audio features The computer has an integrated audio controller that supports Sound Blaster applications. It also has a single internal speaker and three types of audio connectors. The audio controller, enables you to 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 the computer are 3.5 mm (0.125 in.) mini-jacks. For the location of the audio connectors, see "Input/output connectors" on page 57. Line in This connector accepts audio signals into the computer 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, a multimedia keyboard, 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 Use this connector to connect a microphone to the 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. One microphone connector is on the front of the computer. Using security features To deter unauthorized use of the computer, you can use anti-intrusion features and other security features that are provided with the computer. Anti-intrusion features IBM anti-intrusion features help protect against the theft of computer components, such as the microprocessor, memory modules, or hard disk drives. 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 21. 16 IBM IntelliStation M Pro Type 9229: User's Guide

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If
you
are
using
a
cathode
ray
tube
(CRT)
monitor,
set
the
monitor
for
the
highest
noninterlaced
refresh
rate
that
it
supports.
If
the
monitor
complies
with
the
Video
Electronics
Standards
Association
(VESA)
display
data
channel
(DDC)
standard,
it
is
probably
already
set
to
the
highest
refresh
rate
the
monitor
and
video
controller
support.
If
you
are
not
sure
whether
the
monitor
is
DDC-compliant,
see
the
documentation
that
comes
with
the
monitor.
If
you
are
using
a
flat-panel
monitor,
the
refresh
rate
does
not
have
to
be
set
to
the
highest
noninterlaced
refresh
rate
that
the
monitor
supports.
Flat-panel
monitors
produce
flicker-free
images
even
when
they
are
operating
at
a
minimum
60
Hz
noninterlaced
rate.
If
you
have
a
dual-monitor
video
adapter,
see
the
video
adapter
device-driver
readme
file
and
documentation
for
more
information
about
enabling
dual
monitors.
Using
audio
features
The
computer
has
an
integrated
audio
controller
that
supports
Sound
Blaster
applications.
It
also
has
a
single
internal
speaker
and
three
types
of
audio
connectors.
The
audio
controller,
enables
you
to
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
the
computer
are
3.5
mm
(0.125
in.)
mini-jacks.
For
the
location
of
the
audio
connectors,
see
“Input/output
connectors”
on
page
57.
Line
in
This
connector
accepts
audio
signals
into
the
computer
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,
a
multimedia
keyboard,
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
Use
this
connector
to
connect
a
microphone
to
the
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.
One
microphone
connector
is
on
the
front
of
the
computer.
Using
security
features
To
deter
unauthorized
use
of
the
computer,
you
can
use
anti-intrusion
features
and
other
security
features
that
are
provided
with
the
computer.
Anti-intrusion
features
IBM
anti-intrusion
features
help
protect
against
the
theft
of
computer
components,
such
as
the
microprocessor,
memory
modules,
or
hard
disk
drives.
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
21.
16
IBM
IntelliStation
M
Pro
Type
9229:
User’s
Guide