expansion card Meaning in the Cambridge English Dictionary Cambridge dictionaries logo
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Meaning of “expansion card” in the English Dictionary

"expansion card" in Business English

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expansion cardnoun [C]

uk   us   IT
a board covered with small metal electrical connections that create one or more circuits and that can be connected to the main circuit board of a computer so that it can do more things: Installing a wireless (or any other) network usually means opening your desktop PC to plug in an expansion card.
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(Definition of expansion card from the Cambridge Business English Dictionary © Cambridge University Press)
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