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
might
have
a
mini-PCI
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
mini-PCI
SCSI
controller.
The
controller
has
the
following
features:
v
Double-transition
clocking
to
achieve
up
to
320
MBps
(megabytes
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
The
following
illustration
shows
a
SCSI
connector.
34
1
68
35
SCSI
cabling
requirements
You
can
install
three
internal
SCSI
devices
using
the
SCSI
signal
cable
that
comes
with
some
computer
models.
If
you
plan
to
attach
external
SCSI
devices,
you
can
order
an
optional
SCSI
adapter
and
external
cable.
To
select
and
order
the
correct
cables
for
use
with
external
devices,
contact
your
IBM
marketing
representative
or
authorized
reseller.
To
receive
an
indication
of
SCSI
hard-disk
drive
activity,
you
must
also
connect
the
SCSI
adapter
to
the
SCSI
LED
connector
on
the
system
board.
See
“System
board
internal
connectors”
on
page
78
for
the
locations
of
the
SCSI
connectors.
Setting
SCSI
IDs
Each
SCSI
device
that
is
connected
to
a
SCSI
controller
must
have
a
unique
SCSI
ID.
This
ID
enables
the
SCSI
controller
to
identify
the
device
and
ensure
that
different
devices
on
the
same
SCSI
channel
do
not
attempt
to
transfer
data
simultaneously.
SCSI
devices
that
are
connected
to
different
SCSI
channels
can
have
duplicate
SCSI
IDs.
See
the
information
that
comes
with
the
device
for
instructions
for
setting
its
SCSI
ID.
64
IntelliStation
M
Pro
Types
6225
and
6228:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
Summary of Contents for IntelliStation M Pro 6225
Page 1: ...IntelliStation M Pro Types 6225 and 6228 Hardware Maintenance Manual and Troubleshooting Guide...
Page 2: ......
Page 3: ...IntelliStation M Pro Types 6225 and 6228 Hardware Maintenance Manual and Troubleshooting Guide...
Page 135: ...Appendix B Safety information 125...
Page 137: ...Appendix B Safety information 127...
Page 139: ...Appendix B Safety information 129...
Page 141: ...Appendix B Safety information 131...
Page 151: ...Appendix B Safety information 141...
Page 153: ...Appendix B Safety information 143...
Page 155: ...Appendix B Safety information 145...
Page 175: ......
Page 176: ...Part Number 25K8120 Printed in USA 1P P N 25K8120...
