AMI BIOS UTILITY
CPB8929
Legacy
USB
Support
This
function
is
required
for
booting
from
USB
devices
and
for
operating
systems
which
do
not
support
USB
themselves
(mainly
DOS
and
some
BootLoaders).
Default
setting
is
Enabled
Disabled
Use
this
setting
to
disable
legacy
USB
support.
Enabled
Use
this
setting
to
enable
legacy
USB
support.
Auto
Use
this
setting
to
enable
legacy
USB
support
if
there
are
USB
devices
present.
EHCI
Hand
‐
off
This
is
a
workaround
feature
for
Operating
Systems
without
EHCI
hand
‐
off
support.
The
EHCI
ownership
must
be
claimed
by
EHCI
Driver.
Default
setting
is
Disabled.
4.4.4
AHCI
SATA
Configuration
This
option
configures
the
Serial
ATA
drives
to
use
AHCI
(Advanced
Host
Controller
Interface).
AHCI
allows
the
storage
driver
to
enable
the
advanced
Serial
ATA
features
which
will
increase
storage
performance.
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