Locate the screw that you set aside in Step 3. Use this screw to secure the expansion card to the case.
Take care not to drop the screw into the case, onto the motherboard or other parts inside the computer. Besides causing damage to sensitive parts on impact, leaving a screw inside a computer can cause electrical shorting which can lead to all kinds of serious problems.
Note: Some cases do not use retaining screws but instead feature other ways of securing the expansion card to the case. In these situations, please reference your computer or case manual to determine how to secure the card to the case.
