Definition

AHCI (Advanced Host Controller Interface)

Contributor(s): Kim Hefner

An AHCI (Advanced Host Controller Interface) is a hardware mechanism that allows software to communicate with Serial ATA (SATA) devices.

AHCI enables the use of advanced features, such as hot swapping and Native Command Queuing. Hard drives using AHCI mode can operate at higher speeds than those in Integrated Drive Electronics (IDE) mode.

The specification that defines the functional behavior and software interface of the AHCI was introduced by Intel Corp.

This was last updated in October 2014

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