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Coherency Support (Non-Isoch)
Use this feature to maintain setting coherency between processors or other devices.
Select Enable for the Non-Iscoh VT-d engine to pass through DMA to enhance system
performance. The options are Enable and Disable.
Intel® VMD Technology
Intel® VMD for Onboard NVMe
Onboard NVMe Mode
This feature selects Legacy Mode or VMD Mode for Onboard NVMe. The options are
Legacy Mode and VMD Mode.
PCIe Hot Plug
This feature Enables or Disables PCIe Hot Plug capability globally. The options are En-
able or Disable.
PCIe Completion Timeout (Global)
Use this feature to enable PCI-E Completion Timeout support for electric tuning. The
options are Yes, No, and Per-Port.
South Bridge
Legacy USB Support
This feature enables support for USB 2.0 and older. The options are Enabled and Dis-
abled. Default setting is Enabled.
XHCI Hand-off
When disabled, the motherboard will not support USB 3.0. Options are Enabled and
Disabled. Default setting is Disabled.
Port 60/64 Emulation
This feature allows legacy I/O support for USB devices like mice and keyboards. The
options are Enabled and disabled. Default setting is Enabled.
Port 61h bit-4 Emulation
Select Enabled to enable the emulation of Port 61h but-4 toggling in SMM (System
Management Mode). The options are Disabled and Enabled.
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Chapter 4: BIOS
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