Supermicro X11DGQ User Manual page 91

*If Intel® VMD for Volume Management Device for PStack0 is set to Enable, the fol-
lowing item will display.
IIO-PCIE Express Global Options

IIO-PCIE Express Global Options
The section allows the user to configure the following PCI-E global options:
PCIe Hot Plug
Select Enable to support Hot-plugging for the selected PCI-E slots which will allow the user
to replace the devices installed in the slots without shutting down the system. The options
are Enable, Disable, Auto, and Manual.
PCI-E Completion Timeout (Global) Disable
Use this feature to select the PCI-E Completion Time-out settings. The options are Yes,
No, and Per-Port.
South Bridge
The following South Bridge information will display:
•
USB Module Version
•
USB Devices
Legacy USB Support
Select Enabled to support onboard legacy USB devices. Select Auto to disable legacy support
if there are no legacy USB devices present. Select Disable to have all USB devices available
for EFI applications only. The options are Enabled, Disabled, and Auto.
XHCI Hand-Off
This is a work-around solution for operating systems that do not support XHCI (Extensible
Host Controller Interface) hand-off. The XHCI ownership change should be claimed by the
XHCI driver. The options are Disabled and Enabled.
Port 60/64 Emulation
Select Enabled for I/O port 60h/64h emulation support, which in turn, will provide complete
legacy USB keyboard support for the operating systems that do not support legacy USB
devices. The options are Enabled and Disabled.
PCIe PLL SSC
Select Enabled for PCH PCI-E Spread Spectrum Clocking support, which will allow the BIOS
to monitor and attempt to reduce the level of Electromagnetic Interference caused by the
components whenever needed. The options are Enabled and Disabled.
91
Chapter 4: UEFI BIOS