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USB Port 2
Select Enabled for USB Port 2 support. The options are Enabled and Disabled.
USB Port 3
Select Enabled for USB Port 3 support. The options are Enabled and Disabled.
PCI Express Configuration
This item displays the information of onboard PCI-E slots.
PCI Express Port 0
This item enables or disables the PCI Express Port 0 on the motherboard. The
options are Enabled and Disabled.
Speed
This feature allows the user to set the PCIe port speed. The options are Auto, Gen
2 and Gen 1.
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.
BIOS Read/Write Protection
If this feature is set to Enabled, BIOS Read/Write Protection will be enabled in the
BIOS SPI region which will not allow any data to be read from or written into the SPI
region to ensure data integrity in this region. The options are Enabled and Disabled.
ACPI Settings
ACPI Sleep State
This feature selects the ACPI Sleep State that the system will enter into when
the suspend button is activated. The options are Suspend Disabled, and S3 only
(Suspend to RAM).
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
5-9
Chapter 5: BIOS
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