Cards or printed circuit boards that are installed in available computer slots on a computer's motherboard to, typically, add audio or video functionality.
Circuit boards that fit into expansion slots on the motherboard to link the computer to additional devices, such as modems or scanners.
Electronic circuit cards that fit into slots on the main circuit board (called the motherboard) inside the case of the computer. A computer user can add items such as modems, sound capability, and ports to a PC using an expansion card.
Circuit boards that fit into expansion slots directly on the motherboard to provide the computer with new devices, such as a graphics card, internal modem, sound card, etc.
Small circuit boards which are plugged into the main motherboard. They are used for controlling the video output, processing sounds, or communicating with modems and network cards.
Electronic circuit cards that fit into slots on the main circuit board inside the case of the computer. Expansion cards are used to add such items as modems, sound capability, ports, etc. to a PC.