Keyboard
connector
There
is
one
keyboard
connector
on
the
rear
of
the
computer.
Use
this
connector
to
connect
a
PS/2
(non-USB)
keyboard.
The
following
illustration
shows
a
keyboard
connector.
6
4
2
1
3
5
If
you
attach
a
keyboard
to
this
connector,
USB
ports
and
devices
are
disabled
during
the
power-on
self-test
(POST).
Parallel
connector
There
is
one
parallel
connector
on
the
rear
of
the
computer.
Use
this
connector
to
connect
a
parallel
device.
The
following
illustration
shows
a
parallel
connector.
13
1
25
14
The
parallel
connector
supports
three
standard
IEEE
1284
modes
of
operation:
standard
parallel
port
(SPP),
enhanced
parallel
port
(EPP),
and
extended
capability
port
(ECP).
If
you
configure
the
parallel
port
to
operate
in
bidirectional
mode,
it
supports
the
ECP
and
EPP
modes.
When
the
parallel
connector
is
configured
as
bidirectional,
use
an
IEEE
1284-compliant
cable
that
does
not
exceed
3
meters
(9.8
ft).
Use
the
Devices
and
I/O
Ports
options
in
the
IBM
Configuration/Setup
Utility
program
to
configure
the
parallel
connector
as
bidirectional.
Serial
connectors
There
are
two
serial
connectors
on
the
rear
of
the
computer.
Use
these
connectors
to
connect
serial
devices.
The
following
illustration
shows
a
serial
connector.
1
5
6
9
Ultra320
SCSI
connector
Your
computer
has
an
integrated
SCSI
controller.
This
single-channel
controller
supports
an
independent,
Ultra320
SCSI
channel
that
supports
up
to
15
SCSI
devices.
The
SCSI
connector
for
the
channel
is
on
the
system
board.
The
channel
supports
up
to
15
SCSI
devices.
This
controller
has
the
following
features:
v
Double-transition
clocking
to
achieve
up
to
320
MB-per-second
data-transfer
rates
v
Domain
name
validation
to
negotiate
compatible
data-transfer
speeds
with
each
device
v
Cyclic-redundancy
checking
(CRC)
to
improve
data
reliability
v
An
active
terminator
for
SCSI
bus
termination
SCSI
cabling
requirements
You
can
install
four
internal
SCSI
devices
using
the
SCSI
signal
cable
that
comes
with
some
computer
models.
If
you
plan
to
attach
external
SCSI
devices,
you
must
order
an
optional
PCI
SCSI
adapter
and
external
cable.
To
select
and
order
the
correct
cables
for
use
with
external
devices,
contact
your
IBM
reseller
or
IBM
72
IBM
IntelliStation
M
Pro
Types
6220
and
6230:
Hardware
Maintenance
Manual
Summary of Contents for IntelliStation M Pro
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