Gigabyte Z590 UD AC User Manual page 34

& PCIE Bifurcation Support
Allows you to determine how the bandwidth of the PCIEX16 slot is divided. Options: Auto, PCIE x8/x8,
PCIE x8/x4/x4. (Default: Auto)
& Audio Controller
Enables or disables the onboard audio function. (Default: Enabled)
If you wish to install a 3rd party add-in audio card instead of using the onboard audio, set this item to
Disabled.
& Above 4G Decoding
Enables or disables 64-bit capable devices to be decoded in above 4 GB address space (only if your system
supports 64-bit PCI decoding). Set to Enabled if more than one advanced graphics card are installed and
their drivers are not able to be launched when entering the operating system (because of the limited 4 GB
memory address space). (Default: Disabled)
& IOAPIC 24-119 Entries
Enables or disables this function. (Default: Enabled)
ƒ Super IO Configuration
& Serial Port
Enables or disables the onboard serial port. (Default: Enabled)
ƒ USB Configuration
& Legacy USB Support
Allows USB keyboard/mouse to be used in MS-DOS. (Default: Enabled)
& XHCI Hand-off
Determines whether to enable XHCI Hand-off feature for an operating system without XHCI Hand-off
support. (Default: Enabled)
& USB Mass Storage Driver Support
Enables or disables support for USB storage devices. (Default: Enabled)
& Mass Storage Devices
Displays a list of connected USB mass storage devices. This item appears only when a USB storage device
is installed.
ƒ Network Stack Configuration
& Network Stack
Disables or enables booting from the network to install a GPT format OS, such as installing the OS from
the Windows Deployment Services server. (Default: Disabled)
& IPv4 PXE Support
Enables or disables IPv4 PXE Support. This item is configurable only when Network Stack is enabled.
& IPv4 HTTP Support
Enables or disables HTTP boot support for IPv4. This item is configurable only when Network Stack is
enabled.
& IPv6 PXE Support
Enables or disables IPv6 PXE Support. This item is configurable only when Network Stack is enabled.
& IPv6 HTTP Support
Enables or disables HTTP boot support for IPv6. This item is configurable only when Network Stack is
enabled.
& PXE boot wait time
Allows you to configure how long to wait before you can press <Esc> to abort the PXE boot.
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