PCI Subsystem Settings

PCI Subsystem Option	Description
PCI Driver Version	Version number of the PCI driver. Example: A5.01.23
PCI Settings Common for All Devices	Caution: If you change the PCI settings common to all devices, there might be unwanted results, such as the system might freeze.
Above 4G Decoding	Enable (default) or disable above 4G decoding.
SR-IOV Support	Enable (default) or disable Single Root I/O Virtualization (SR-IOV) to configure devices into multiple virtual devices that can be used on virtual OS installations. If supported by the hardware and set to enabled, all devices on the system that are SR-IOV capable are configured to support SR-IOV and I/O resources are allocated to the device as normal. If set to disabled, I/O resources are not allocated to the device.
BME DMA Mitigation	Enable or disable (default) Bus Master Attribute that is disabled after PCI enumeration for PCI bridges after SMM is locked.