20.
Replace
the
support
bracket
(see
“Replacing
the
support
bracket”
on
page
29).
21.
Replace
the
side
cover
(see
“Replacing
the
side
cover”
on
page
27).
22.
Reconnect
the
external
cables
and
power
cords;
then,
turn
on
the
attached
devices
and
the
computer.
Power
and
signal
cables
for
internal
drives
The
computer
uses
cables
to
connect
IDE,
Serial
ATA,
and
SCSI
devices
to
the
power
supply
and
to
the
system
board.
(See
“System-board
internal
connectors”
on
page
77
for
the
location
of
system-board
connectors.)
Review
the
following
information
before
connecting
power
and
signal
cables
to
internal
drives:
v
The
drives
that
are
preinstalled
in
the
computer
come
with
power
and
signal
cables
attached.
If
you
replace
any
drives,
remember
which
cable
is
attached
to
which
drive,
or
label
the
cables.
v
When
you
install
a
drive,
make
sure
that
one
of
the
drive
connectors
of
the
signal
cable
is
connected
to
the
drive
and
that
the
connector
at
the
other
end
of
the
signal
cable
is
connected
to
the
system
board.
v
When
you
install
a
drive,
set
the
jumpers
either
to
disable
auto-start
or
to
delay
startup,
to
prevent
the
system
power
supply
from
being
overtaxed
by
all
drives
trying
to
spin
up
at
once.
v
The
computer
has
two
IDE
buses,
primary
and
secondary.
Each
of
these
buses
supports
up
to
two
IDE
devices.
The
primary
IDE
bus
uses
connector
IDE1
on
the
system
board
and
the
secondary
IDE
bus
uses
connector
IDE2.
v
If
you
have
only
one
IDE
device
on
a
cable,
it
must
be
set
as
a
master
device.
v
If
two
IDE
devices
are
used
on
a
single
cable,
one
must
be
designated
as
the
master
device
and
the
other
as
the
subordinate
device;
otherwise,
the
computer
might
not
recognize
some
of
the
IDE
devices.
The
master
and
subordinate
designation
is
determined
by
switch
or
jumper
settings
on
each
IDE
device.
The
following
cables
are
provided:
v
Power
cables:
Four-wire
power
cables
connect
the
drives
to
the
power
supply.
At
the
end
of
these
cables
are
plastic
connectors
that
can
be
attached
to
different
drives;
these
connectors
vary
in
size.
With
Serial
ATA
drives,
you
can
use
either
a
four-wire
power
cable
or
a
five-wire
Serial
ATA
power
cable,
but
do
not
use
both
at
the
same
time
(use
one
or
the
other).
v
Signal
cables:
Signal
cables
typically
are
flat
cables,
also
called
ribbon
cables,
that
connect
IDE,
SATA,
SCSI,
and
diskette
drives
to
the
system
board.
Two
or
three
types
of
signal
cable
come
with
the
computer:
–
IDE:
The
wider
IDE
signal
cable
has
three
connectors.
One
of
these
connectors
is
attached
to
the
drive,
one
is
a
spare,
and
the
third
is
attached
to
the
primary
or
secondary
IDE
connector
on
the
system
board.
The
spare
connector
can
be
used
to
connect
additional
IDE
drives
to
the
computer.
Note:
The
optical
drive
is
attached
to
an
ATA
100
signal
cable.
ATA
100
signal
cables
are
color-coded.
The
blue
connector
is
connected
to
the
system
board.
The
black
connector
is
connected
to
the
master
IDE
device.
The
gray
middle
connector
is
connected
to
the
subordinate
IDE
device.
–
Serial
ATA:
The
narrower,
black
signal
cable
has
two
connectors.
One
is
connected
to
the
SATA
drive,
and
the
other
is
connected
to
the
connector
on
the
system
board.
Each
SATA
drive
comes
with
a
cable.
If
you
install
an
additional
SATA
drive,
you
will
need
an
additional
cable.
–
SCSI:
The
following
cables
can
be
used
to
attach
SCSI
devices
to
the
integrated
SCSI
controller
on
the
system
board:
44
IntelliStation
A
Pro
Type
6224:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
Содержание IntelliStation A Pro 6224
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