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X9DRT-P/-PT/-PIBQ/-PIBF Motherboard User’s Manual
Thermal Throttling
Throttling improves reliability and reduces power consumption in the proces-
sor via automatic voltage control during processor idle states. The options are
Disabled and
CLTT
(Closed Loop Thermal Throttling).
Double Refresh
Select Enabled to support double refresh for onboard memory to enhance
memory and system performance. The options are
Auto
, Enabled, and Disabled.
South Bridge Configuration
This feature allows the user to configure the settings for the Intel PCH chip.
PCH Information
This feature displays the following PCH information.
Name
: This item displays the name of the PCH chip.
Stepping
: This item displays the status of the PCH stepping.
USB Devices
: This item displays the USB devices detected by the BIOS.
All USB Devices
Select Enabled to enable USB port/device support. The options are Disabled and
Enabled
.
EHCI Controller 1/EHCI Controller 2 (Available when All USB Devices is set
to Enabled)
Select Enabled to enable EHCI (Enhanced Host Controller Interface) Controller 1
or Controller 2. The options are Disabled and
Enabled
.
Legacy USB Support (Available when USB Functions is not Disabled)
Select Enabled to support legacy USB devices. Select Auto to disable legacy sup-
port if USB devices are not present. Select Disabled to have USB devices available
for EFI (Extensive Firmware Interface) applications only. The settings are Disabled,
Enabled
and Auto.
Port 60/64 Emulation
Select Enabled to enable I/O port 60h/64h emulation support for the legacy USB
keyboard so that it can be fully supported by the operating systems that does not
recognize a USB device. The options are Disabled and
Enabled
.
