Supermicro X11DDW-L User Manual page 103

Stop Bits
A stop bit indicates the end of a serial data packet. Select 1 Stop Bit for standard serial data
communication. Select 2 Stop Bits if slower devices are used. The options are 1 and 2.
ACPI Settings
NUMA
This setting Enables or Disables Non-Uniform Memory Access (NUMA), a feature that
improves memory-to-processor communication and performance. The options are Enabled
or Disabled.
WHEA Support
Select Enabled to support the Windows Hardware Error Architecture (WHEA) platform and
provide a common infrastructure for the system to handle hardware errors within the Windows
OS environment to reduce system crashes and to enhance system recovery and health
monitoring. The options are Enabled and Disabled.
High Precision Timer
Select Enabled to activate the High Precision Event Timer (HPET) that produces periodic
interrupts at a much higher frequency than a Real-time Clock (RTC) does in synchronizing
multimedia streams, providing smooth playback and reducing the dependency on other
timestamp calculation devices, such as an x86 RDTSC Instruction embedded in the CPU.
The High Performance Event Timer is used to replace the 8254 Programmable Interval Timer.
The options are Enabled and Disabled.
 Trusted Computing (Available when a TPM device is installed
and detected by the BIOS)
When a TPM (Trusted-Platform Module) device is detected in your machine, the following
information will be displayed.
•
TPM2.0 Device Found
•
Vendor
•
Firmware Version
Security Device Support
If this feature and the TPM jumper (JPT1) on the motherboard are both enabled, the onboard
security (TPM) device will be enabled in the BIOS to enhance data integrity and system
security. Please note that the OS will not show the security device. Neither TCG EFI protocol
nor INT1A interaction will be made available for use. If you have made changes on the setting
on this item, be sure to reboot the system for the change to take effect. The options are
Disable and Enable. If this option is set to Enable, the following screen and items will display:
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Chapter 4: BIOS