Serial
connectors
Used
to
attach
an
external
modem,
serial
printer,
or
other
devices
that
use
a
9-pin
serial
connector.
Parallel
connector
Used
to
attach
a
parallel
printer,
parallel
scanner,
or
other
devices
that
use
a
25-pin
parallel
connector.
Ethernet
connector
Used
to
attach
an
Ethernet
cable
for
a
Local
Area
Network
(LAN).
Note:
To
operate
the
computer
within
FCC
Class
B
limits,
use
a
category
5
Ethernet
cable.
Microphone
connector
Used
to
attach
a
microphone
to
your
computer
when
you
want
to
record
voice
or
other
sounds
on
the
hard
disk
if
you
use
speech-recognition
software.
Audio
line
out
connector
Used
to
send
audio
signals
from
the
computer
to
external
devices,
such
as
powered
stereo
speakers
(speakers
with
built-in
amplifiers),
headphones,
multimedia
keyboards,
or
the
audio
line
in
connector
on
a
stereo
system
or
other
external
recording
device.
Audio
line
in
connector
Used
to
receive
audio
signals
from
an
external
audio
device,
such
as
a
stereo
system.
When
you
attach
an
external
audio
device,
a
cable
is
connected
between
the
audio
line
out
connector
of
the
device
and
the
audio
line
in
connector
of
the
computer.
26
Hardware
Maintenance
Manual
Types
2292,
2273,
6043,
6343,
6349,
6350,
6790,
6791,
6792,
6793,
6794,
6795,
6823,
6825