Asus PRIME Z790-A WIFI PRIME PROART TUF GAMING INTEL 700 Series BIOS Manual En - Page 66
USB Configuration, SR-IOV Support, Legacy USB Support, XHCI Hand-off, Mass Storage Devices
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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