
Chapter 7: BIOS
7-9
PCI Express Port - Gen X
Use this feature to select the speed of PEG. The options are
Auto
, Gen1, Gen2,
and Gen3.
De-emphasis Control
Use this feature to confi gure the de-emphasis control on PEG. The options are
-6 dB
and -3.5 dB.
Detect Non-Compliance Device
This feature enables or disables the detection of a non-compliant device that is
attached to the PCI Express Graphics (PEG) port. The options are
Disabled
,
and Enabled
.
South Bridge Confi guration
This item displays the current South Bridge Revision.
USB Functions
This feature allows the user to decide the number of onboard USB ports to be
enabled. The Options are Disabled and
Enabled
.
Legacy USB Support (available if USB Functions above is Enabled)
Select Enabled to use Legacy USB devices. If this item is set to Auto, Legacy
USB support will be automatically enabled if a legacy USB device is installed on
the motherboard, and vise versa. The settings are Disabled,
Enabled
and
Auto.
BIOS EHCI Hand-Off (available if USB Functions above is Enabled)
This item is for Operating Systems that does not support Enhanced Host
Controller Interface (EHCI) hand-off. When enabled, EHCI ownership change
will be claimed by the EHCI driver. The settings are
Enabled
and Disabled.
Port 60/64 Emulation (available if USB Functions above is Enabled)
Select Enabled to activate I/O port 60h/64h emulation support. This must be
enabled for complete USB keyboard legacy support for Operating Systems that
are not compatible with USB devices. The settings are
Enabled
and Disabled.
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