User Manual
Table Of Contents
- 1. Knowing BIOS
- 2. BIOS setup program
- 3. My Favorites
- 4. Main menu
- 5. Extreme Tweaker menu
- 6. Advanced menu
- 6.1 Platform Misc Configuration
- 6.2 CPU Configuration
- 6.3 System Agent (SA) Configuration
- 6.4 PCH Configuration
- 6.5 PCH Storage Configuration
- 6.6 PCH-FW Configuration
- 6.7 Thermal Configuration
- 6.8 Thunderbolt(TM) Configuration
- 6.9 Trusted Computing
- 6.10 UEFI Variables Protection
- 6.11 PCI Subsystem Settings
- 6.12 USB Configuration
- 6.13 Network Stack Configuration
- 6.14 NVMe Configuration
- 6.15 HDD/SSD SMART Information
- 6.16 APM Configuration
- 6.17 Onboard Devices Configuration
- 6.18 Intel(R) Rapid Storage Technology
- 7. Monitor menu
- 8. Boot menu
- 9. Tool menu
- 10. Exit menu
- 11. Updating BIOS
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ROG Z790 Series (Intel
®
14
th
) BIOS Manual
6.12 USB Configuration
The items in this menu allow you to change the USB-related features.
The following item appears only when Above 4G Decoding is set to [Enabled].
Re-Size BAR Support
If the system has Resizable BAR capable PCIe Devices, this option enables or disables
Resizable BAR Support (Only if System supports 64 bit PCI Decoding).
Configuration options: [Disabled] [Enabled]
To enable Re-Size BAR Support for harnessing full GPU memory, please go to the Boot
section and set CSM(Compatibility Support Module) to [Disabled].
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.