Add-on

1. A software add-on is any third-party program, script, or other software that is added onto the program to help enhance the program by giving it additional features and abilities.
2. When referring to hardware an add-on is any component that increases the capabilities and/or performance of your computer. For example, RAM ,CPU and modems can be considered add-ons.

• Additional information about installing hardware can be found on document CHADD.

Also see: Add, Install