3-16AcerAltos 21000 System GuideFollow these steps to install the memory board:1. Align the memory board with the memory board slot on thesystem board.Install the memory board with the componentside up.2. Insert the board into the slot until it fits into place.3. Insert one end of the metal bracket into the hole located at theback of the housing.4. Align the clamp rail with the board edge.5. Secure the metal bracket with a screw as shown below.