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Chapter 4: AMI BIOS
4-19
Onboard LAN1 Option ROM/Onboard LAN2 Option ROM
Select iSCSI to use the iSCSI Option ROM to boot the computer using an iSCSI
device installed in a LAN port specied. Select PXE (Preboot Execution Environ-
ment) to boot the computer using a PXE device installed in a LAN port specied.
Select Disabled to prevent system boot using a device installed in a LAN port. The
options for Onboard LAN1 Option ROM are Disabled, PXE and iSCSI. The options
for Onboard LAN2 Option ROM are Disabled, PXE and iSCSI.
Network Stack
Select Enabled to enable PXE (Preboot Execution Environment) or UEFI (Unied
Extensible Firmware Interface) for network stack support. The options are Enabled
and Disabled.
Ipv4 PXE Support (Available when Network Stack is set to Enabled)
Select Enabled to enable Ipv4 PXE (Preboot Execution Environment) for boot sup-
port. If this feature is set to Disabled, Ipv4 PXE boot option will not be supported.
The options are Enabled and Disabled.
Ipv6 PXE Support (Available when Network Stack is set to Enabled)
Select Enabled to enable Ipv6 PXE (Preboot Execution Environment) for boot sup-
port. If this feature is set to Disabled, Ipv6 PXE boot option will not be supported.
The options are Enabled and Disabled.
ACPI Settings
High Precision Timer
Select Enabled to activate the High Performance 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 de-
pendency on other timestamp calculation devices, such as an x86 RDTSC Instruc-
tion embedded in the CPU. The High Performance Event Timer is used to replace
the 8254 Programmable Interval Timer. The options are Enabled and Disabled.
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, S1 only (CPU
Stop Clock), S3 only (Suspend to RAM), and Both S1 and S3 available for OS to
choose from.