تعريف expansion card في الإنجليزية الإنجليزية القاموس.
A circuit board that can be installed to enhance a computer's capabilities, as by increasing memory or improving graphics. Also called expansion board. a circuit board that fits into a computer and makes it possible for the computer to do more things, for example play sounds or video pictures, or use a telephone line
card which connects to the motherboard and allows the performance of various operations