An opening on the motherboard of a system unit where expansion cards can be inserted is known as
- expansion port.
- extension box.
- extension board.
-
expansion slot.
The correct answer is: D
Explanation
An opening on the motherboard of a system unit where expansion cards can be inserted is known as an expansion slot.
Expansion slots are used to add additional functionality to a computer, such as a graphics card, sound card, or network card. They are also used to add more memory to a computer.