Article: These are the slots that you can install expansion cards into. PCI slots are typically white, and you may have 1-5 of them. The slots line up with the removable panels on the back of the case. If you're having difficulty identifying the PCI slots, check your motherboard's documentation. You can look this up online if you have the motherboard's model number. If you are replacing an old card, remove the old card first. Having two cards installed will lead to hardware conflicts. Remove the screw securing the card to your case and pull the card directly out of the slot.  You may need to disconnect the sound card from your CD/DVD drive. Make sure that any speakers connected to the old sound card are disconnected before you remove the old card. Remove the corresponding dust guard panel from the back if you are installing the new card. Make sure that the notches in the slot line up with the card, and press the card straight down firmly. Don't force the card into the slot, and ensure that the ports on the back line up with the with the bay opening. Screw a single screw into the metal tab that secures the card to the computer chassis. Don't overtighten, but ensure the card is snugly fastened to the case. Some older sound cards may connect to the CD/DVD drive with a small cable. This is optional on virtually all newer computers, as this connection is now handled by the hardware. Return the side panel to the computer and secure it. Place the computer back at your desk and plug the cables back in.
What is a summary of what this article is about?
Locate the PCI slots. Remove the existing sound card (if necessary). Insert the new card. Secure the card with a screw. Connect the sound card to the CD/DVD drive (optional). Close the case.