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In ''definition of legacy from Oxford Dictionaries Online''
/ref> The replacement ports usually provide most of the functionality of the legacy ports with higher speeds, more compact design, or plug and play and
In computing
Computing is any goal-oriented activity requiring, benefiting from, or creating computing machinery. It includes the study and experimentation of algorithmic processes, and development of both hardware and software. Computing has scientific, ...
, a legacy port is a computer port or connector that is considered by some to be fully or partially superseded./ref> The replacement ports usually provide most of the functionality of the legacy ports with higher speeds, more compact design, or plug and play and
hot swap
Hot swapping is the replacement or addition of components to a computer system without stopping, shutting down, or rebooting the system; hot plugging describes the addition of components only. Components which have such functionality are sai ...
capabilities for greater ease of use. Modern PC motherboard
A motherboard (also called mainboard, main circuit board, mb, mboard, backplane board, base board, system board, logic board (only in Apple computers) or mobo) is the main printed circuit board (PCB) in general-purpose computers and other expand ...
s use separate Super I/O controllers to provide legacy ports, since current chipsets do not offer direct support for them. A category of computers called legacy-free PC
A legacy-free PC is a type of personal computer that lacks a floppy and/or optical disc drive, legacy ports, and an Industry Standard Architecture (ISA) bus (or sometimes, any internal expansion bus at all). According to Microsoft, "The basic goal ...
s omits these ports, typically retaining only USB for external expansion.
USB adapters
An adapter or adaptor is a device that converts attributes of one electrical device or system to those of an otherwise incompatible device or system. Some modify power or signal attributes, while others merely adapt the physical form of one con ...
are often used to provide legacy ports if they are required on systems not equipped with them.
Common legacy ports
See also
*Legacy encoding
Character encoding is the process of assigning numbers to Graphics, graphical character (computing), characters, especially the written characters of Language, human language, allowing them to be Data storage, stored, Data communication, transmi ...
*Legacy system
In computing, a legacy system is an old method, technology, computer system, or application program, "of, relating to, or being a previous or outdated computer system", yet still in use. Often referencing a system as "legacy" means that it pave ...
References
Computer buses Legacy hardware {{compu-hardware-stub