Lenovo 8423 User Manual
To
determine
the
type
of
memory
required:
1.
Remove
the
computer
cover.
See
2.
Locate
the
memory
module
connectors.
See
v
If
the
two
memory
module
connectors
closest
to
the
edge
of
the
board
are
a
yellow
color,
your
system
board
has
DDR
type
memory.
DDR
memory
modules
are
184-pin,
2.5
V
and
can
be
used
in
any
combination
of
128
MB,
256
MB,
512
MB,
and
1
GB
sizes.
v
If
the
two
memory
module
connectors
closest
to
the
edge
of
the
board
are
a
green
color,
your
system
board
has
DDR2
type
memory.
DDR2
memory
modules
are
240-pin,
1.8
V
and
can
be
used
in
any
combination
of
256
MB,
512
MB,
and
1
GB
sizes.
Notes:
a.
The
type
of
memory
required
is
also
indicated
in
text
near
the
logo
on
the
system
board.
b.
System
memory
as
reported
in
the
“System
Summary”
section
of
the
Setup
Utility
or
by
the
operating
system
might
be
less
than
the
amount
of
physical
memory
installed.
This
discrepancy
is
due
to
memory
addressing
limitations
of
the
Intel
915G
Family
chipset
and
is
usually
not
visable
until
more
than
3GB
of
memory
is
installed.
To
install
a
memory
module:
1.
Remove
the
computer
cover.
See
2.
Locate
the
memory
module
connectors.
See
3.
Pivot
or
open
the
retaining
clips
for
the
connector
where
you
are
installing
the
memory
module.
4.
Ensure
that
the
notch
on
the
new
memory
module
1aligns
correctly
with
the
connector
key
2
on
the
system
board.
Push
the
memory
module
straight
down
into
the
connector
until
the
retaining
clips
close.
What
to
do
next:
v
To
work
with
another
option,
go
to
the
appropriate
section.
v
To
complete
the
installation,
go
to
Chapter
1.
Installing
options
13