ASUS M5A97LER20 Manual De Usuario

3-16

Chapter 3: BIOS setup

Allows you to disable or enable the HPET timer. Configuration options: [Disabled] [Enabled]

While entering Setup, the BIOS automatically detects the presence of SATA devices. The 

SATA Port items show Not Present if no SATA device is installed to the corresponding SATA 

port.

Allows you to set SATA options.

OnChip SATA Channel [Enabled]
Allows you to enable or disable serial ATA. Configuration options: [Enabled] [Disabled]

The following items appear only when the above item is set to [Enabled].

SATA Port1 - Port4 [AHCI]
[IDE]      Set to [IDE] when you want to use the Serial ATA hard disk drives as Parallel 

ATA physical storage devices.

[AHCI]   Set to [AHCI] when you want the SATA hard disk drives to use the AHCI 

(Advanced Host Controller Interface). 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.

[RAID]   Set to [RAID] when you want to create a RAID configuration from the SATA 

hard disk drives.

SATA Port5 - Port6 [AHCI]
Allows you to set the SATA port 5~6 mode. This item can only be configured as [IDE] 

when SATA Port1 - Port4 is set to [IDE]. Configuration options: [AHCI] [IDE]

• 

When the SATA Port1–Port 4 and the SATA Port5–Port 6 items are set to [AHCI], the 

information of the SATA connectors 1–6 can be seen only under the OS environment 

or during POST.

• 

For Windows

®

 XP OS, you have to install the AHCI driver, so that you could use the 

SATA connectors 1–6 in AHCI mode under the OS environment.

If you use a SATA optical drive to run the 

Windows

 XP OS installation disk, we strongly 

recommend that you install the optical drive to the SATA connectors 5/6 and set them to 

[IDE] mode.

Board SATA RAID ROM [Legacy ROM]
This item appears only when you set SATA Port1 - Port4 to [RAID] and allows you to 

select Board SATA RAID ROM. Configuration options: [Disabled] [Legacy ROM] [UEFI 

DRIVER]