IBM 8479 Hardware Maintenance Manual - Page 81

Audio, connectors, connector

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of the USB connectors. The following table shows the pin-number assignments for the USB connectors. 1 4 Table 12. USB connector pin-number assignments Pin Signal 1 +5 V 2 -Data 3 +Data 4 Ground Audio connectors The audio connectors are used to connect external audio equipment to the server. See "I/O connector locations" on page 64 for the location of these connectors. Line Line Mic out in Line out This connector is used to send audio signals from the server to external devices, such as powered speakers with built-in amplifiers, headphones, multimedia keyboards, or the audio line-in connector on a stereo system. Line in This connector is used to accept audio signals from external devices, such as line output from a stereo, television, or musical instrument into the server sound system. Mic This connector is used to connect a microphone to the server when you want to record voice or other sounds on the hard disk drive. It might also be used by speech- recognition software. MIDI connector The musical instrument digital interface (MIDI) connector enables the server to interact with musical instruments and other musical equipment. You might use the MIDI connector as an interface between the server and a synthesizer to edit and store sound information for the synthesizer on the server. See "I/O connector locations" on page 64 for the location of the MIDI connector. The following table shows the pin-number assignments for the MIDI connector. 8 1 15 9 Installing options 73

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of
the
USB
connectors.
The
following
table
shows
the
pin-number
assignments
for
the
USB
connectors.
1
4
Table
12.
USB
connector
pin-number
assignments
Pin
Signal
1
+5
V
2
-Data
3
+Data
4
Ground
Audio
connectors
The
audio
connectors
are
used
to
connect
external
audio
equipment
to
the
server.
See
“I/O
connector
locations”
on
page
64
for
the
location
of
these
connectors.
Line
out
Line
in
Mic
Line
out
This
connector
is
used
to
send
audio
signals
from
the
server
to
external
devices,
such
as
powered
speakers
with
built-in
amplifiers,
headphones,
multimedia
keyboards,
or
the
audio
line-in
connector
on
a
stereo
system.
Line
in
This
connector
is
used
to
accept
audio
signals
from
external
devices,
such
as
line
output
from
a
stereo,
television,
or
musical
instrument
into
the
server
sound
system.
Mic
This
connector
is
used
to
connect
a
microphone
to
the
server
when
you
want
to
record
voice
or
other
sounds
on
the
hard
disk
drive.
It
might
also
be
used
by
speech-
recognition
software.
MIDI
connector
The
musical
instrument
digital
interface
(MIDI)
connector
enables
the
server
to
interact
with
musical
instruments
and
other
musical
equipment.
You
might
use
the
MIDI
connector
as
an
interface
between
the
server
and
a
synthesizer
to
edit
and
store
sound
information
for
the
synthesizer
on
the
server.
See
“I/O
connector
locations”
on
page
64
for
the
location
of
the
MIDI
connector.
The
following
table
shows
the
pin-number
assignments
for
the
MIDI
connector.
8
1
15
9
Installing
options
73