Dell OptiPlex 3020M Owner's Manual

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Installing the Coin-Cell Battery

  1. Place the coin-cell battery into its slot on the system board.
  2. Press the coin-cell battery downward until the release latch springs back into place and secures it.
  3. Install the:
    1. PS2 and serial connector board
    2. hard drive
    3. cover
  4. Follow the procedures in After Working Inside Your Computer.

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