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4-20 Chapter 4: BIOS setup
4.5.9 USB Conguration
Aptio Setup Utility - Copyright (C) 2010 American Megatrends, Inc.
Advanced
Enables Legacy USB support.
AUTO option disables legacy
support if no USB devices are
connected. DISABLE option will
keep USB devices available
only for EFI applications.
USB Conguration
USB Devices
1 Mouse, 2 Hubs
Legacy USB Support [Enabled]
EHCI Hand-off [Disabled]
USB hardware delays and time-out:
USB transfer time-out [20 sec]
Device reset time-out [20 sec]
Device power-up delay [Auto]
The
USB Devices
item shows the auto-detected values. If no USB device is
detected, the item shows
None
.
Legacy USB Support [Enabled]
Allows you to enable or disable support for legacy USB devices. Setting to [Auto]
allows the system to detect the presence of USB devices at startup. If detected, the
USB controller legacy mode is enabled. If no USB device is detected, the legacy
USB support is disabled. Conguration options: [Disabled] [Enabled] [Auto]
EHCI Hand-off [Disabled]
Enables or disables the BIOS EHCI hand-off support.
Conguration options: [Disabled] [Enabled]
4.5.8 Intel TXT(LT) Conguration
Aptio Setup Utility - Copyright (C) 2010 American Megatrends, Inc.
Advanced
Enables Legacy USB support.
AUTO option disables legacy
support if no USB devices are
connected. DISABLE option will
keep USB devices available
only for EFI applications.
Intel Trusted Execution Technology Conguration
Intel TXT support only can be enabled/disabled if SMX
is enabled. VT and VT-d support must also be enabled
prior to TXT.
Secure Mode Extensions (SMX) Enabled
Intel TXT(LT) Support [Disabled]
Intel TXT(LT) Support [Disabled]
Allows you to enable or disable the Intel Trusted Execution Technology (TXT)
feature. Conguration options: [Disabled] [Enabled]
The
Intel TXT(LT) Support
item requires a Trusted Platform Module (TPM) to
be installed on the motherboard to enable.