To determine the type of memory required:

1.Remove the computer cover. See “Removing the cover” on page 10.

2.Locate the memory module connectors. See “Identifying parts on the system board” on page 11.

vIf 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.

vIf 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 “Removing the cover” on page 10.

2.Locate the memory module connectors. See “Identifying parts on the system board” on page 11.

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:

vTo work with another option, go to the appropriate section.

vTo complete the installation, go to “Replacing the cover and connecting the cables” on page 24.

Chapter 1. Installing options 13

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Lenovo 8423, 8146, 8427, 8422, 8143, 8144, 8097 manual What to do next

8144, 8097, 8143, 8422, 8427 specifications

Lenovo is known for its innovative laptops and computers, and the models 8146, 8423, 8427, 8422, and 8143 are excellent representations of the brand's commitment to quality engineering and technology. These models cater to a range of different users, from casual consumers to professionals who demand performance and reliability.

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