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DIMM(memory) removal and installation - ThinkPad R400, T400

For access, remove these FRUs in order:

  1. Battery.
  2. Palm rest or palm rest with fingerprint reader

Note: If only one DIMM is used on the computer you are servicing, the card must be installed in SLOT-0 (a), but not in SLOT-1 (b).

Image 1

When installing: Insert the notched end of the DIMM into the socket. Press the DIMM firmly, and pivot it until it snaps into the place. Make sure that it is firmly fixed in the slot and does not move easily.

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