Pci Subsystem Settings; Usb Configuration; Legacy Usb Support [Enabled]; Usb Single Port Control - Asus PRIME Z390-P Manual

2.6.9

PCI Subsystem Settings

SR-IOV Support [Disabled]
This item allows you to enable or disable the Single Root IO Virtualization support if your
system has SR-IOV capable PCIe devices. Configuration options: [Disabled] [Enabled]
2.6.10

USB Configuration

The items in this menu allow you to change the USB-related features.
The USB Devices item shows the auto-detected values. If no USB device is detected, the
item shows None.

Legacy USB Support [Enabled]

[Enabled]
[Disabled]
[Auto]
XHCI Hand-off
[Enabled]
[Disabled]

USB single port control

The subitems in this menu allow you to set the USB Port Disable Override features.
U31G1_1~10 [Enabled]
Allows you to enable or disable the USB3.0 ports individually. Configuration options:
[Disabled] [Enabled]
USB11~13 [Enabled]
Allows you to enable or disable the USB2.0 ports individually. Configuration options:
[Disabled] [Enabled]
2.6.11 Network Stack Configuration
Network Stack [Disabled]
This item allows user to disable or enable the UEFI network stack. Configuration options:
[Disabled] [Enabled]
The following two items appear only when you set the previous item to [Enabled].
Ipv4 / Ipv6 PXE Support [Disabled]
This item allows you to enable or disable the Ipv4/Ipv6 PXE wake event. Configuration
options: [Disabled] [Enabled]
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Your system supports the USB devices in legacy operating systems.
Your USB devices can be used for BIOS setup only and cannot be
recognized in the boot devices list.
Your system automatically detects the presence of USB devices at startup.
If any USB devices are detected, the legacy USB support is enabled.
Enables the support for operating systems without an XHCI
hand-off feature.
Disables the XHCI Hand-off support.
Chapter 2: Getting started