expansion card 
(also expansion board)
noun Computing
A circuit board that can be inserted in a computer to give extra facilities or memory.With almost everything I need integrated on the motherboard, the only expansion card I have in my PC is the graphics card....
- The terminals are used for electrically connecting the elongated expansion card with a printed circuit board on which the card connector is mounted.
- If you have ever added an expansion card to your computer, you are almost half-way to building your own system.
- one's (own) flesh and blood
- one's (own) kind
- one's pound of flesh
- one's pride and joy
- one's salad days
- one's spiritual home
- one's star is rising
- one's strong point
- one-star
- velvet worm
- velvety
- Velázquez de Cuéllar, Diego
- Velázquez, Diego
- Ven.
- vena cava
- venal
- venality
- venally
- venation
- venational
- venator
- vend
- Venda
- vendace
- vendange