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Chapter 7: BIOS
EHCI2
Select Enabled to enable EHCI (Enhanced Host Controller Interface) support on
USB 3.0 connector #2. (At least one USB 3.0 connector should be enabled for EHCI
support.) The options are Disabled and Enabled.
XHCI Pre-Boot Drive
Select Enabled to enable XHCI (Extensible Host Controller Interface) support on a
pre-boot drive specified by the user. The options are Enabled and Disabled.
XHCI Idle L1
Select Enabled for XHCI (Extensible Host Controller Interface) Idle Level 1 sup-
port on a USB 3.0 connector specified by the user. The options are Enabled and
Disabled.
PCH DMI ASPM
Select Enabled to enable ASPM (Active State Power Management) support for a
PCH DMI drive. The options are Disabled and Enabled.
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