Supermicro X12SAE User Manual page 71

Chapter 4: UEFI BIOS
High Precision Event 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 Disabled and Enabled.
Native PCIE Enable
Enable this feature to grant control of PCI Express Native hot plug, PCI Express Power
Management Events, and PCI Express Capability Structure Control. The options are
Disabled and Enabled.
Native ASPM
Select Enabled for the operating system to control the ASPM, or Disabled for the BIOS to
control the ASPM. The options are Auto, Enabled, and Disabled.
Boot Feature
Fast Boot
This feature enables the system to boot with a minimal set of required devices to launch.
This has no effect on BBS boot options. The options are Disabled and Enabled.
Quiet Boot
Use this feature to select the screen display between the POST messages and the OEM
logo upon bootup. Select Disabled to display the POST messages. Select Enabled to
display the OEM logo instead of the normal POST messages. The options are Enabled
and Disabled.
Option ROM Messages
Use this feature to set the display mode for the Option ROM. Select Keep Current to display
the current AddOn ROM setting. Select Force BIOS to use the Option ROM display set by
the system BIOS. The options are Force BIOS and Keep Current.
Bootup NumLock State
Use this feature to set the Power-on state for the <Numlock> key. The options are Off and
On.
Wait For 'F1' If Error
Use this feature to force the system to wait until the 'F1' key is pressed if an error occurs.
The options are Disabled and Enabled.
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