Express-BD74
BIOS Setup
73
7.4.4.2. Chipset > IIO Configuration > Intel VT for Directed I/O (VT-d)
Feature
Options
Description
Intel VT for Directeded I/O (VT-d) Info
VTd Azalea VCp Optimizations
Disable
Enable
Enable/Disable Azalea VCp Optimizations
Intel VT for Directed
Enable
Disable
Enable/Disable Intel Virtualization Technology for
Directed I/O (VT-d) by reporting the I/O device
assignment to VMM through DMAR ACPI Tables.
ACS Control
Enable
Disable
Enable: Programs ACS only to Chipset Pcie Root
Ports Bridges;
Disable: Programs ACS to all Pcie bridges
Interrupt Remapping
Enable
Disable
Enable/Disable VT_D Interrupt Remapping Support
Coherency Support (Non-Isoch)
Enable
Disable
Enable/Disable Non-Isoch VT_D Engine Coherency
support
Coherency Support (Isoch)
Enable
Disable
Enable/Disable Isoch VT_D Engine Coherency
support
7.4.5.
Chipset > PCH Configuration
Feature
Options
Description
PCH Configuration
Info only
PCH Devices
Submenu
Enable/Disable Intel(R) IO Controller Hub devices
PCI Express Configuration
Submenu
PCI Express Configuration settings
PCH SATA Configuration
Submenu
SATA devices and settings
USB Configuration
Submenu
USB Configuration Settings
Networking
Submenu
Network devices and setings
7.4.5.1. Chipset > PCH Configuration > PCH Device
Feature
Options
Description
SMBUS Device
Disabled
Enabled
Enable/Disable SMBUS Device.
Serial irq Mode
Quiet
Continuous
Configure Serial IRQ Mode.
High Precision Timer
Disabled
Enabled
Enable or Disable the High Precision Event Timer.
PCH state after G3
S0
S5
Last State
Select S0/S5 for ACPI state after a G3
PCH CRID
Disabled
Enabled
Enable/Disable PCH’s CRID