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The AHCI allows the onboard storage driver to enable advanced Serial
ATA features that increases storage performance on random workloads by
allowing the drive to internally optimize the order of commands.
If you want the Serial ATA hard disk drives to use the Advanced Host Controller
Interface (AHCI), set this item to [AHCI]. For details on AHCI, go to:
www.intel.com/support/chipsets/imst/sb/CS-012304.htm
www.intel.com/support/chipsets/imst/sb/CS-012305.htm
The SATA controller is set to Native mode when this item is set to [RAID] or [AHCI].
Onboard SATA RAID ROM [Disabled]
Allows you to enable or disable the onboard SATA RAID boot ROM.
Configuration options: [Disabled] [Enabled]
The Onboard.SATA.RAID.ROM item appears only when you set the Configure
SATA.As item to [RAID].
Legacy IDE Channels [SATA Pri, PATA Sec]
Allows you to set Serial ATA, Parallel ATA, or both, to legacy mode.
Configuration options:
• [SATA Only] - SATA1, SATA2, SATA3, and SATA4 ports are available
• [PATA Pri, SATA Sec] - SATA2 and SATA4 ports are available
• [SATA Pri, PATA Sec] - SATA1 and SATA3 ports are available
• [PATA Only] - Only PATA ports are available
The Legacy.IDE.Channels option appears only when you set the ATA/IDE.
Configuration item to [Compatible] mode.
ASUS RS120-E4/PA4
5-15
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