What Is the Difference Between Expansion Slots and Expansion Cards?

An expansion slot is a socket on the motherboard that is used to insert an expansion card ( also known as a board or circuit board). The expansion card provides additional features to the computer such as video, sound, or extra USB ports.

An expansion card is a printed circuit board that provides extra functionality to a computer system. The most common type of expansion card is a graphics card, which enhances the computer’s ability to output images to a display.

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Other popular types of expansion cards include sound cards, network cards, and storage controllers.

While expansion slots and expansion cards are both used to add extra features and functionality to a computer system, they are not interchangeable. An expansion card must be inserted into an appropriate expansion slot in order for it to work properly.