AHCI

E199216

host controller interface specification technical standard

AHCI (Advanced Host Controller Interface) is a technical standard that defines how SATA host controllers communicate with the system to enable features like native command queuing and hot swapping.

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

All labels observed (3)

Label	Occurrences
Advanced Host Controller Interface	2
AHCI canonical	1
AHCI 1.0	1

How this entity was disambiguated

This entity first appeared as the object of triple T1789420 — 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: AHCI
Context triple: [Serial ATA, supports, AHCI]

A. Serial ATA
Serial ATA (SATA) is a computer bus interface standard used primarily to connect storage devices like hard drives and solid-state drives to a motherboard using high-speed serial communication.
B. SCSI
SCSI (Small Computer System Interface) is a set of standards for connecting and transferring data between computers and peripheral devices, widely used for high-performance storage solutions.
C. Parallel ATA
Parallel ATA is an older computer interface standard used to connect storage devices like hard drives and optical drives to a motherboard using parallel data transmission.
D. Serial Attached SCSI
Serial Attached SCSI is a high-speed, point-to-point serial interface standard used primarily in enterprise storage systems to connect servers with hard drives and solid-state drives, offering improved performance, scalability, and reliability over parallel SCSI.
E. Intel VT-d
Intel VT-d is Intel’s hardware-assisted I/O virtualization technology that enables secure and efficient direct device assignment to virtual machines.
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: AHCI
Target entity description: AHCI (Advanced Host Controller Interface) is a technical standard that defines how SATA host controllers communicate with the system to enable features like native command queuing and hot swapping.

A. Serial ATA
Serial ATA (SATA) is a computer bus interface standard used primarily to connect storage devices like hard drives and solid-state drives to a motherboard using high-speed serial communication.
B. SCSI
SCSI (Small Computer System Interface) is a set of standards for connecting and transferring data between computers and peripheral devices, widely used for high-performance storage solutions.
C. Parallel ATA
Parallel ATA is an older computer interface standard used to connect storage devices like hard drives and optical drives to a motherboard using parallel data transmission.
D. Serial Attached SCSI
Serial Attached SCSI is a high-speed, point-to-point serial interface standard used primarily in enterprise storage systems to connect servers with hard drives and solid-state drives, offering improved performance, scalability, and reliability over parallel SCSI.
E. Intel VT-d
Intel VT-d is Intel’s hardware-assisted I/O virtualization technology that enables secure and efficient direct device assignment to virtual machines.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	host controller interface specification ⓘ technical standard ⓘ
appliesTo	SATA host controllers ⓘ
benefit	ability to add or remove SATA devices without shutting down ⓘ improved multitasking of disk operations ⓘ improved performance through command queuing ⓘ
category	computer hardware interface ⓘ storage controller standard ⓘ
communicationType	register-level interface ⓘ
configuredVia	BIOS settings ⓘ UEFI firmware settings ⓘ
contrastsWith	IDE compatibility mode ⓘ RAID controller proprietary interfaces ⓘ
defines	how SATA host controllers communicate with the system ⓘ
developedBy	Intel Corporation ⓘ surface form: Intel
documentationType	public specification ⓘ
enables	OS-managed SATA controller configuration ⓘ operating-system-level control of SATA devices ⓘ
fullName	AHCI self-linksurface differs ⓘ surface form: Advanced Host Controller Interface
governingBody	Intel Corporation ⓘ surface form: Intel
introducedIn	mid-2000s ⓘ
relatedTo	SATA specification ⓘ SATA-IO ⓘ surface form: Serial ATA International Organization
replaces	legacy IDE controller programming model ⓘ
requires	BIOS or UEFI support ⓘ operating system driver support ⓘ
scope	host-side interface, not physical SATA signaling ⓘ
standardizes	programming interface for SATA host bus adapters ⓘ
supports	multiple SATA ports on a single controller ⓘ
supportsFeature	DMA data transfers ⓘ Native Command Queuing ⓘ hot plugging ⓘ hot swapping ⓘ port multiplier support ⓘ power management ⓘ staggered spin-up ⓘ
targetPlatform	PC-class systems ⓘ
usedBy	BSD operating systems ⓘ Linux ⓘ Windows ⓘ surface form: Microsoft Windows macOS ⓘ
usedWith	SATA hard disk drives ⓘ SATA optical drives ⓘ SATA solid-state drives ⓘ Serial ATA ⓘ
versionExample	AHCI self-linksurface differs ⓘ surface form: AHCI 1.0 AHCI 1.1 ⓘ AHCI 1.2 ⓘ

How these facts were elicited

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Serial ATA → supports → AHCI ⓘ

AHCI → fullName → AHCI self-linksurface differs ⓘ

this entity surface form: Advanced Host Controller Interface

AHCI → versionExample → AHCI self-linksurface differs ⓘ

this entity surface form: AHCI 1.0

SATA-IO → relatedStandard → AHCI ⓘ