Apple Desktop Bus port

E268850

computer hardware interface legacy interface serial bus

The Apple Desktop Bus port is a legacy serial interface developed by Apple for connecting low-speed input devices like keyboards and mice to Macintosh computers.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (6)

Label	Occurrences
Apple Desktop Bus	8
ADB (Apple Desktop Bus) on later models	1
Apple Desktop Bus connector	1
Apple Desktop Bus interface	1
Apple Desktop Bus peripherals	1
Apple Desktop Bus port canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T2447874 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Apple Desktop Bus port
Context triple: [Performa 5200CD, hasComponent, Apple Desktop Bus port]

A. Apple Desktop Bus Mouse
The Apple Desktop Bus Mouse is a compact, single-button computer mouse designed by Apple for use with classic Macintosh systems that featured the Apple Desktop Bus interface.
B. AppleTalk
AppleTalk was Apple’s proprietary suite of networking protocols that enabled file and printer sharing and other communication services between Macintosh computers and devices.
C. AirPort
AirPort is Apple's brand name for its line of Wi‑Fi networking technology and products used to provide wireless connectivity for its computers and devices.
D. IEEE 1394
IEEE 1394 is a high-speed serial bus interface standard, commonly known as FireWire, used for real-time data transfer between digital devices such as computers, cameras, and audio/video equipment.
E. NuBus
NuBus is a 32-bit, processor-independent expansion bus standard widely used in late-1980s and early-1990s workstations and personal computers, including many Apple Macintosh systems.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Apple Desktop Bus port
Target entity description: The Apple Desktop Bus port is a legacy serial interface developed by Apple for connecting low-speed input devices like keyboards and mice to Macintosh computers.

A. Apple Desktop Bus Mouse
The Apple Desktop Bus Mouse is a compact, single-button computer mouse designed by Apple for use with classic Macintosh systems that featured the Apple Desktop Bus interface.
B. AppleTalk
AppleTalk was Apple’s proprietary suite of networking protocols that enabled file and printer sharing and other communication services between Macintosh computers and devices.
C. AirPort
AirPort is Apple's brand name for its line of Wi‑Fi networking technology and products used to provide wireless connectivity for its computers and devices.
D. IEEE 1394
IEEE 1394 is a high-speed serial bus interface standard, commonly known as FireWire, used for real-time data transfer between digital devices such as computers, cameras, and audio/video equipment.
E. NuBus
NuBus is a 32-bit, processor-independent expansion bus standard widely used in late-1980s and early-1990s workstations and personal computers, including many Apple Macintosh systems.
F. None of above. chosen

Statements (43)

Predicate	Object
instanceOf	computer hardware interface ⓘ legacy interface ⓘ serial bus ⓘ
abbreviation	ADB ⓘ
busTopology	linear daisy-chain ⓘ
category	Apple hardware ⓘ surface form: Macintosh hardware computer connectors ⓘ serial buses ⓘ
communicationProtocol	Apple Desktop Bus protocol ⓘ
connectorType	4-pin mini-DIN ⓘ
dataPins	1 ⓘ
dataTransferType	serial ⓘ
designedBy	Apple hardware engineering team ⓘ
designedFor	low-cost peripheral connection ⓘ
developer	Apple Inc. ⓘ
discontinuedInApproximateYear	late 1990s ⓘ
discontinuedUseBy	Apple Inc. ⓘ
era	1980s computer hardware ⓘ 1990s computer hardware ⓘ
fullName	Apple Desktop Bus port self-linksurface differs ⓘ surface form: Apple Desktop Bus
groundPins	1 ⓘ
introducedInProduct	Apple IIgs ⓘ surface form: Apple IIGS
introducedInYear	1986 ⓘ
maxDevicesPerBus	16 ⓘ
powerPins	2 ⓘ
primaryRegionOfUse	worldwide ⓘ
replacedBy	USB ⓘ
signalType	single-wire bidirectional data ⓘ
supportsDaisyChaining	true ⓘ
supportsDeviceType	graphics tablet ⓘ keyboard ⓘ keypad ⓘ mouse ⓘ
supportsHotPlugging	limited ⓘ
usedFor	connecting keyboards ⓘ connecting low-speed input devices ⓘ connecting mice ⓘ
usedOnModel	Macintosh II ⓘ Macintosh SE ⓘ early Power Macintosh models ⓘ
usedOnPlatform	Apple II ⓘ surface form: Apple II computers Apple Macintosh computers ⓘ surface form: Macintosh computers
voltageLevel	+5 V ⓘ

How these facts were elicited