Acer AcerAltos 21000 System Manual page 80

Follow these steps to install the memory board:
1. Align the memory board with the memory board slot on the
system board.
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 the
back of the housing.
4. Align the clamp rail with the board edge.
5. Secure the metal bracket with a screw as shown below.
3-16
Install the memory board with the component
side up.
AcerAltos 21000 System Guide