Chapter 4: BIOS
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Scrambler
This feature scrambles data in the memory and makes it inaccessible. The options are
Disabled and
Enabled
.
Slow Power Down Exit
Use this feature to enable or disable the slow exit after the precharge power down. The
options are Disable dand
Enabled
.
South Bridge
The following South Bridge information will display:
•
USB Module Version\
•
USB Controllers
•
USB Devices
Legacy USB Support
Select Enabled to support onboard legacy USB devices. Select Auto to disable legacy support
if there are no legacy USB devices present. Select Disable to have all USB devices available
for EFI applications only. The options are
Enabled,
Disabled, and Auto.
XHCI Hand-Off
This is a work-around solution for operating systems that do not support XHCI (Extensible
Host Controller Interface) hand-off. The XHCI ownership change should be claimed by the
XHCI driver. The settings are
Enabled
and Disabled.
Port 60/64 Emulation
Select Enabled for I/O port 60h/64h emulation support, which in turn, will provide complete
legacy USB keyboard support for the operating systems that do not support legacy USB
devices. The options are Disabled and
Enabled
.
IQAT Configuration
IQAT
Select Enabled to hide IQAT devices from the operating system. The options are Disabled
and
Enabled
.
Set 64B MRR/MPL
Use this feature to enable or disable the 64-bit MRR/MPL in IQAT. The options are Disabled
and Enabled.