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X8DTT-H/-HF/-HIBX/-HIBXF/-HIBQ/-HIBQF
User’s Manual
Crystal Beach/DMA (Direct Memory Access)
This feature works with the Intel I/O AT (Acceleration Technology) to accelerate
the performance of TOE devices. (
Note
: A TOE device is a specialized, dedicated
processor that is installed on an add-on card or a network card to handle some
or all packet processing of this add-on card.) When this feature is set to Enabled,
it will enhance overall system performance by providing direct memory access for
data transferring. The options are Enabled and
Disabled.
Intel VT-d
Select Enabled to enable Intel's Virtualization Technology support for Direct I/O VT-d
by reporting the I/O device assignments to VMM through the DMAR ACPI Tables.
This feature offers fully-protected I/O resource-sharing across the Intel platforms,
providing the user with greater reliability, security and availability in networking and
data-sharing. The settings are Enabled and
Disabled
.
IOH PCIE Max Payload Size
Some add-on cards perform faster with the coalesce feature, which limits the pay-
load size to 128 MB; while others, with a payload size of 256 MB which inhibits
the coalesce feature. Please refer to your add-on card user guide for the desired
setting. The options are 256 MB and
128MB
.
PCI-E Port 1 Link Select
This feature allows the user to confi gure the IOH link settings for the PCI-E Port 1.
The options are X4X4X4X4, X4X4X8, X8X4X4, X8X8, and
X16.
SouthBridge Confi guration
This feature allows the user to confi gure the settings for the Intel ICH South Bridge
chipset.
USB Functions
This feature allows the user to decide the number of onboard USB ports to be
enabled. The Options are: Disabled and
Enabled
.
Legacy USB Support
Select Enabled to use Legacy USB devices. If this item is set to Auto, Legacy USB
support will be automatically enabled if a legacy USB device is installed on the
motherboard, and vise versa. The settings are Disabled,
Enabled
and Auto.
USB 2.0 Controller
Select Enabled to activate the onboard USB 2.0 controller. The options are
Enabled
and Disabled.
