Lenovo PC 300GL User Guide (including system setup and option in - Page 76

Working with System Memory You can add memory to your computer to increase system performance. Your computer has either two or three connectors (depending on the model) for installing memory modules that provide up to a maximum of 256 MB or 384 MB (depending on the model). Your computer uses dual inline memory modules (DIMMs). The IBM-installed DIMMs that come with your computer are unbuffered, synchronous dynamic random access memory (SDRAM). When installing or replacing DIMMs, the following rules apply: Fill each system memory connector sequentially, starting at DIMM 0. Use only 3.3 V, 100 MHz, unbuffered, SDRAM DIMMs Use only 16, 32, 64, or 128 MB DIMMs in any combination of supported SDRAM DIMMs. Note: To locate the memory connectors on the system board, see "Identifying Parts on the System Board" on page 60. Installing and Removing a DIMM Before you begin: Read "Safety Information" on page vii and "Handling Static-Sensitive Devices" on page 52. Read the instructions that come with the new system memory. Turn off the computer and all other connected devices. Disconnect all cables attached to the computer and remove the computer cover (see "Removing the Cover" on page 54). Read "Accessing the System Board" on page 60 to learn the location of the parts on the system board. 62 PC 300GL User Guide