What Are PCI Expansion Slots Used For?

PCI expansion slots are used to connect a variety of devices to a computer. These devices can be anything from sound cards and video cards to network cards and modems.

PCI slots are also used to connect special purpose devices like RAID controllers and WiFi cards.

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The number of PCI slots on a motherboard varies, but most modern motherboards have at least four PCI slots. Some high-end motherboards have eight or more PCI slots.

The type of devices you can connect to your computer via PCI expansion slots is limited only by the number of slots on your motherboard and the types of devices you can find that fit those slots. So, if you need to add a new sound card or network card to your computer, chances are good that you can do so by adding a PCI expansion card.