Editing Apple III (section)

== Input/Output and Expansion ==
The Apple III offered a range of I/O and expansion options:
* '''Serial ports''': Two RS-232C-compatible DB-25 connectors for printers and modems
* '''Parallel port''': Optional via interface card
* '''Video output''': Composite video for monochrome or colour monitors
* '''Keyboard''': Full-stroke, 74-key keyboard with numeric keypad
* '''Expansion slots''': Four internal slots compatible with most Apple II peripheral cards
* '''External drive port''': For additional floppy or ProFile hard disk

These features allowed the Apple III to connect to a variety of business peripherals and expand its capabilities as needed.