3.Hold the card along the top corners and guide it into the slot Once the connectors reach the slot, push the card in firmly (but carefully). You should feel the card fit into place. If it does not go in smoothly, do not force it; pull the card all the way out and try again.
4.Replace the slot cover bracket by inserting it into the small metal holder below the option slots; then replace its retaining screw.
5.Replace the computer’s cover as described under “Replacing the Cover.” Then see