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High Precision Event Timer Confi guration
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, 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.
PCI Express Ports Confi guration
PCI Express Port 1~8
The options are Enabled, Disabled, and Auto.
PCIe Sub Decode
The options are Enabled and Disabled.
DMI Vc1/Vcp/Vcm Control
The options are Enabled and Disabled.
USB (Universal Serial Bus) Confi guration
All USB Devices
Select Enabled to enable all onboard USB devices. The options are Enabled and
Disabled.
EHCI Controller 1/ EHCI Controller 2
Select Enabled to enable Enhanced Host Interface (EHCI) Controller 1 or Controller
2 to improve overall platform performance. The options are Enabled and Disabled.
USB Port 0~USB Port 13
Select Enabled to enable a USB port (from USB Port 0 to USB Port 13) as specifi ed
by the User. The options are Enabled and Disabled.
ME (Management Engine) Subsystem
Intel ME Subsystem Confi guration
This feature displays the following ME Subsystem Confi guration settings.
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Chapter 7: BIOS
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