Asus PRIME H770-PLUS PRIME PROART TUF GAMING INTEL 700 Series BIOS Manual Engl - Page 66

USB Configuration, SR-IOV Support, Legacy USB Support, XHCI Hand-off, Mass Storage Devices

Page 66 highlights

SR-IOV Support This option enables or disables Single Root IO Virtualization Support if the system has SRIOV capable PCIe devices. Configuration options: [Disabled] [Enabled] 6.10 USB Configuration The items in this menu allow you to change the USB-related features. The Mass Storage Devices item shows the auto-detected values. If no USB device is detected, the item shows None. Legacy USB Support [Enabled] Your system supports the USB devices in legacy operating systems. [Disabled] Your USB devices can be used for BIOS setup only and cannot be recognized in the boot devices list. [Auto] Your system automatically detects the presence of USB devices at startup. If any USB devices are detected, the legacy USB support is enabled. XHCI Hand-off This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change should be claimed by XHCI driver. [Disabled] Support XHCI by XHCI drivers for operating systems with XHCI support. [Enabled] Support XHCI by BIOS for operating systems without XHCI support. Mass Storage Devices: Allows you to select the mass storage device emulation type for devices connected. [Auto] enumerates devices according to their media format. Optical drives are emulated as [CDROM], drives with no media will be emulated according to a drive type. Configuration options: [Auto] [Floppy] [Forced FDD] [Hard Disk] [CD-ROM] 66 PRIME / ProArt / TUF GAMING Intel 700 Series BIOS Manual

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66
PRIME / ProArt / TUF GAMING Intel 700 Series BIOS Manual
SR-IOV Support
This option enables or disables Single Root IO Virtualization Support if the system has SR-
IOV capable PCIe devices.
Configuration options: [Disabled] [Enabled]
The
Mass Storage Devices
item shows the auto-detected values. If no USB device is
detected, the item shows
None
.
Legacy USB Support
[Enabled]
Your system supports the USB devices in legacy operating systems.
[Disabled]
Your USB devices can be used for BIOS setup only and cannot be
recognized in the boot devices list.
[Auto]
Your system automatically detects the presence of USB devices at startup.
If any USB devices are detected, the legacy USB support is enabled.
XHCI Hand-off
This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
[Disabled]
Support XHCI by XHCI drivers for operating systems with XHCI support.
[Enabled]
Support XHCI by BIOS for operating systems without XHCI support.
Mass Storage Devices:
Allows you to select the mass storage device emulation type for devices connected.
[Auto]
enumerates devices according to their media format. Optical drives are emulated as
[CD-
ROM]
, drives with no media will be emulated according to a drive type.
Configuration options: [Auto] [Floppy] [Forced FDD] [Hard Disk] [CD-ROM]
6.10
USB Configuration
The items in this menu allow you to change the USB-related features.