Supermicro X7DWN Plus User Manual page 74

X7DWN+ User's Manual
multiple "virtual" systems in one physical computer. The options are Enabled and
Disabled. (Note: If there is any change to this setting, you will need to power off
and restart the system for the change to take effect.) Please refer to Intel's web
site for detailed information.
Intel EIST Support (Available when supported by the CPU.)
Select Enabled to use the Enhanced Intel SpeedStep Technology and allows the
system to automatically adjust processor voltage and core frequency in an effort
to reduce power consumption and heat dissipation. The options are Enabled and
Disabled. Please refer to Intel's web site for detailed information.
SMRR Support (Available when supported by the CPU.)
Select Enabled to use a new CPU security feature to prevent viruses accessing
the System Management Module (SMM). When set to Enabled, the SM Memory
Region will become uncacheable, effectively preventing viruses from modifying
or corrupting critical system parameters. The options are Enabled and Disabled.
Please refer to Intel's web site for detailed information.
I/O Device Confi guration
Access the submenu to make changes to the following settings.
KBC Clock Input
This setting allows you to select clock frequency for KBC. The options are 6MHz,
8MHz, 12MHz, and 16MHz.
Serial Port A
This setting allows you to assign control of serial port A. The options are Enabled
(user defi ned), Disabled, and Auto (BIOS- or OS- controlled).
Base I/O Address
This setting allows you to select the base I/O address for serial port A. The options
are 3F8, 2F8, 3E8, and 2E8.
Interrupt
This setting allows you to select the IRQ (interrupt request) for serial port A. The
options are IRQ3 and IRQ4.
Serial Port B
This setting allows you to assign control of serial port B. The options are Enabled
(user defi ned), Disabled, Auto (BIOS controlled) and OS Controlled.
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