Lenovo 81413NU User Manual - Page 29

Notes

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1. Remove the computer cover. See "Removing the cover" on page 10. 2. Locate the memory connectors. See "Identifying parts on the system board" on page 11. v If the two memory connectors closest to the edge of the system 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 connectors closest to the edge of the system 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 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 visible until more than 3.0 GB of memory is installed. To install a memory module: 1. Remove the computer cover. See "Removing the cover" on page 10. 2. Pivot the drive bay assembly upward to gain access to the system board. * XXXXXXXXX* * XXXXXXXXX* 3. Locate the memory connectors. See "Identifying parts on the system board" on page 11. 4. Open the retaining clips. Chapter 1. Installing options 13

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1.
Remove
the
computer
cover.
See
“Removing
the
cover”
on
page
10.
2.
Locate
the
memory
connectors.
See
“Identifying
parts
on
the
system
board”
on
page
11.
v
If
the
two
memory
connectors
closest
to
the
edge
of
the
system
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
connectors
closest
to
the
edge
of
the
system
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
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
visible
until
more
than
3.0
GB
of
memory
is
installed.
To
install
a
memory
module:
1.
Remove
the
computer
cover.
See
“Removing
the
cover”
on
page
10.
2.
Pivot
the
drive
bay
assembly
upward
to
gain
access
to
the
system
board.
3.
Locate
the
memory
connectors.
See
“Identifying
parts
on
the
system
board”
on
page
11.
4.
Open
the
retaining
clips.
Chapter
1.
Installing
options
13