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BIOS Setup
 
&
Execute Disable Bit
 (Note)
 
Enables or disables Intel
®
 Execute Disable Bit function. This function may enhance protection for the 
computer, reducing exposure to viruses and malicious buffer overflow attacks when working with its
supporting software and system. (Default: Enabled)
 
&
Intel Virtualization Technology 
(Note)
 
Enables or disables Intel
®
Virtualization Technology. Virtualization enhanced by Intel
®
Virtualization
Technology will allow a platform to run multiple operating systems and applications in independent partitions. 
With virtualization, one computer system can function as multiple virtual systems. (Default: Enabled)
 
&
Intel TXT(LT) Support 
(Note)
 
Enables or disables Intel
®
Trusted Execution Technology (Intel
®
TXT). Intel
®
 Trusted Execution Technology 
provides a hardware-based security foundation. (Default: Disabled)
 
&
Dynamic Storage Accelerator
 
Enables or disables Intel
®
 Dynamic Storage Accelerator. When enabled, the hard drive I/O performance 
will be adjusted according to hard drive load. (Default: Disabled)
 
&
VT-d
 (Note)
 
Enables or disables Intel
®
Virtualization Technology for Directed I/O. (Default: Enabled)
 
&
Windows 8 Features
Allows you to select the operating system to be installed. (Default: Other OS)
 
&
CSM Support
Enables or disables UEFI CSM (Compatibility Support Module) to support a legacy PC boot process.
 

Always
Enables UEFI CSM. (Default)
 

Never  
 
 
Disables UEFI CSM and supports UEFI BIOS boot process only.
This item is configurable only when Windows 8 Features is set to Windows 8.
 
&
Boot Mode Selection
 
Allows you to select which type of operating system to boot.
 

UEFI and Legacy   Allows booting from operating systems that support legacy option ROM or UEFI 
option ROM. (Default)
 

Legacy Only   
Allows booting from operating systems that only support legacy Option ROM.
 

UEFI Only   
 
Allows booting from operating systems that only support UEFI Option ROM.
This item is configurable only when CSM Support is set to Always.
 
&
LAN PXE Boot Option ROM
Allows you to select whether to enable the legacy option ROM for the LAN controller. (Default: Disabled)
This item is configurable only when CSM Support is set to Always.
 
&
Storage Boot Option Control
 
Allows you to select whether to enable the UEFI or legacy option ROM for the storage device controller.
 

Disabled   
 
Disables option ROM.
 

Legacy only
Enables legacy option ROM only. (Default)
 

UEFI only   
 
Enables UEFI option ROM only.
 

Legacy First  
Enables legacy option ROM first.
 

UEFI First  
Enables UEFI option ROM first.
This item is configurable only when CSM Support is set to Always.
(Note)  This item is present only when you install a CPU that supports this feature. For more information about
Intel
®
 CPUs' unique features, please visit Intel's website.