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      How to determine if your computer can hold additional memory - Notebooks

      Learn how to determine if your system is able to hold additional memory using the following steps:

        How to determine the maximum system memory information
        How to determine the amount of additional system memory available
        How to order additional memory for your system
        How to install additional memory in your system

      How to determine the maximum system memory information
      A Series ThinkPads X Series ThinkPads
      G Series ThinkPads Z Series ThinkPads
      R Series ThinkPads 3000 Family Notebooks
      T Series ThinkPads Older ThinkPad systems

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      How to determine the amount of additional system memory available
      The amount of additional memory that may be installed in your system can be determined by:
      1. Adding together the amount of memory installed in each DIMM slot.
      2. Subtracting that amount from the maximum memory size for your system.

      Notes:

      • For systems with two DIMM slots, Lenovo typically ships its systems with memory modules installed in Slot 1.
      • In order to install additional memory, it may be necessary to remove the memory modules from one or both of the DIMM slots.
      • Microsoft Windows Vista supports up to 4GB maximum memory (32-bit versions of Windows Vista cannot support 4GB). Microsoft Windows XP supports up to 3GB maximum memory.
      • Memory comes in the following standard sizes: 64MB, 128MB, 256MB, 512MB, 1024MB (1GB) or 2048MB (2GB).

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      How to order additional memory for your system
      To order additional memory for your system:
      1. Make note of your product number (machine type and model).
      2. Order additional memory from Lenovo.
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      How to install additional memory in your system
      For information on removing and installing memory, choose your system from the list below:

      3000 C100
      3000 C200
      3000 N100
      3000 V100
      ThinkPad A20, A21, A22
      ThinkPad A30, A30p, A31, A31p
      ThinkPad G40, G41
      ThinkPad R30, R31
      ThinkPad R32
      ThinkPad R40, R40e
      ThinkPad R50, R50e, R50p, R51, R51e, R52
      ThinkPad R60, R60e
      ThinkPad T20, T21, T22, T23
      ThinkPad T30
      ThinkPad T40, T40p, T41, T40p, T42, T42p, T43, T43p
      ThinkPad T60, T60p
      ThinkPad X20, X21, X22, X23, X24
      ThinkPad X30, X31, X32
      ThinkPad X40, X41
      ThinkPad X41 Tablet
      ThinkPad X60, X60s
      ThinkPad Z60m, Z61e, Z61m, Z61p
      ThinkPad Z60t, Z61t


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      • Alias ID: MIGR-67447
      • Document ID: HT003128
      • Last Updated :17 Jun 2014
      • © 2016 Lenovo