User`s guide
Advanced Setup Configurations
007-5688-001 71
Crystal Beach/ Direct Cache Access (DCA) 
This feature is available when Crystal Beach/DMA is enabled.This feature works in conjunction 
with the Intel I/O AT to accelerate the performance of the TOE device. When this feature set to 
Enabled, it will enhance overall system performance by providing direct cache 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.
SouthBridge Configuration 
This feature allows the user to configure 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, 2 USB ports, 4 USB ports, 6 USB ports, 8 Ports, 10 Ports and 12 USB 
ports. 
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 
This item indicated if the USB 2.0 controller is activated. The options are Enabled and Disabled. 










