MSI U90 User Manual - Page 71

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4-7 Advanced Menu BIOS Setup Main Atpio Setup Utility - Copyright (C) 2007 American Megatrends, Inc. Advanced Boot Security Save & Exit Intel (R) Speedstep (tm) AHCI Mode Legacy USB Support PCI Legacy Timer [Enabled] [Disable] [Enabled] [32 PCI Bus Clocks] Š Intel(R) SpeedStep(tm) This item allows you to enable or disable Intel SpeedStep technology. When set to Disabled, the system always operates in a conserve power mode (the processor works at FSB400-600MHz or FSB533-800MHz). If you want optimize the processor, set this item to Enabled, so that the processor's speed will be controlled by the use of your operating system and applications. Setting options: Enabled, and Disabled. :Select Screen :Select Item Enter: Select +/-: Change Opt. F1: General Help F2: Previous Values F9: Optimized Default F4: Save Version 1.23.1109. Copyright (C) 2007 American Megatrends, Inc. Š AHCI Mode (Advanced Host Controller Interface) Use this item to enable or disable the AHCI Mode. Setting options: Disabled and Enabled. The default setting is Disabled. Š Legacy USB Support Selecting Enabled allows users to use USB devices, such as mouse, keyboard, or portable disk, in DOS system; or allows users to boot the system by USB device. Setting options: Enabled, Disabled and Auto. Š PCI Latency Timer This item controls how long each PCI device can hold the bus before another takes over. When set to higher values, every PCI device can conduct transactions for a longer time and thus improve the effective PCI bandwidth.

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4-7
BIOS Setup
Advanced Menu
Intel(R) SpeedStep(tm)
This item allows you to enable or disable Intel SpeedStep technology.
When set to
Disabled
, the system always operates in a conserve power
mode (the processor works at FSB400-600MHz or FSB533-800MHz).
If
you want optimize the processor, set this item to
Enabled
, so that the
processor’s speed will be controlled by the use of your operating system
and applications.
Setting options:
Enabled
, and
Disabled
.
AHCI Mode
(Advanced Host Controller Interface)
Use this item to enable or disable the AHCI Mode.
Setting options:
Disabled
and
Enabled
.
The default setting is
Disabled
.
Legacy USB Support
Selecting
Enabled
allows users to use USB devices, such as mouse,
keyboard, or portable disk, in DOS system; or allows users to boot the
system by USB device.
Setting options:
Enabled
,
Disabled
and
Auto
.
PCI Latency Timer
This item controls how long each PCI device can hold the bus before
another takes over. When set to higher values, every PCI device can
conduct transactions for a longer time and thus improve the effective PCI
bandwidth.
Intel
(R) Speedstep (tm)
AHCI Mode
Legacy USB Support
PCI Legacy Timer
[Enabled]
[Disable]
[
]
Enabled
[32 PCI Bus Clocks]
Enter:
+/-:
F1:
F2:
F9:
F4:
Select
Change Opt.
General Help
Previous Values
Optimized Default
Save
:
:
Select Screen
Select Item
Atpio Setup Utility - Copyright (C) 2007 American Megatrends, Inc.
Main
Advanced
Security
Boot
Save & Exit
Version 1.23.1109. Copyright (C) 2007 American Megatrends, Inc.