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A legacy port is a port or connector on a PC that is considered fully or partially obsolete. Some manufacturers, particularly in laptops, remove the legacy ports, making way for modern ports such as USB. The modern ports usually provide much of the functionality of the older ports; special USB adapters are often used to replicate the connectors for older devices. Modern motherboards utilize separate Super I/O controllers to provide legacy ports since current chipsets do not offer direct support for them.
Common legacy ports
- Parallel port (typical uses: printer)
- Serial port / RS-232 (typical uses: modem, mouse)
- AT connector / DIN (typical uses: keyboard)
- PS/2 connector / Mini-DIN (uses: keyboard, mouse)
- Game port (typical uses: gaming devices such as joysticks)
- Apple Desktop Bus / mini-DIN (typical uses: low speed external peripherals; such as keyboard, mouse, or joystick)
- Industry Standard Architecture / ISA bus (typical uses: connect peripheral cards to motherboard)
See also
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