plug-in component
nounUK /ˈplʌɡ.ɪn kəmˈpəʊ.nənt/
US /ˈplʌɡ.ɪn kəmˈpoʊ.nənt/
A small part you can add to a computer or machine to make it do more things.
The new plug-in component made the robot move faster.
OTHER MEANINGS
2. A piece of software that adds new features to a program.
She installed a plug-in component to edit photos in the app.
3. A removable part that fits into a socket or slot.
The plug-in component clicked into place on the circuit board.
4. An optional part that can be connected to a system.
The speaker works as a plug-in component for the game console.