Gigabyte GA-H81M-D3V, User Manual

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VGA Support

Allows you to select which type of operating system to boot.

Auto   

Enables legacy option ROM only.

EFI Driver   

Enables EFI option ROM. (Default)

This item is configurable only when 

Fast Boot

 is set to 

Enabled

 or 

Ultra Fast

.

&

USB Support

Disabled   

All USB devices are disabled before the OS boot process completes.

Full Initial   

All USB devices are functional in the operating system and during the POST.

Partial Initial   

 Part of the USB devices are disabled before the OS boot process completes. 

(Default)

This item is configurable only when 

Fast Boot 

is set to 

Enabled

. This item is disabled when 

Fast Boot 

is 

set to 

Ultra Fast

.

&

PS2 Devices Support

Disabled   

All PS/2 devices are disabled before the OS boot process completes.

Enabled   

 All PS/2 devices are functional in the operating system and during the POST. 

(Default)

This item is configurable only when 

Fast Boot 

is set to 

Enabled

. This item is disabled when 

Fast Boot 

is 

set to 

Ultra Fast

.

&

NetWork Stack Driver Support

Disabled   

Disables booting from the network. (Default)

Enabled   

Enables booting from the network.

This item is configurable only when 

Fast Boot

 is set to 

Enabled

 or 

Ultra Fast

.

&

Next Boot After AC Power Loss

Normal Boot   

Enables normal bootup upon the return of the AC power. (Default)

Fast Boot   

Keeps the Fast Boot settings upon the return of the AC power.

This item is configurable only when 

Fast Boot

 is set to 

Enabled

 or 

Ultra Fast

.

&

Limit CPUID Maximum

 (Note)

Allows you to determine whether to limit CPUID maximum value. Set this item to 

Disabled

 for Windows XP 

operating system; set this item to 

Enabled

 for legacy operating system such as Windows NT4.0. (Default: 

Disabled)

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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)

&

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.

(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.