22
USB Configuration:
USB
Configuration
Parameters.
Legacy
USB
Support:
Enable
Legacy
USB
support.
AUTO
option
disables
legacy
support
if
no
USB
devices
are
connected.
DISABLE
option
will
keep
USB
devices
available
only
for
EFI
applications
EHCI
Hand
‐
off:
This
is
a
workaround
for
0Ses
without
EHCI
hand
‐
off
support.
The
EHCI
ownership
change
should
be
claimed
by
EHCI
driver.
USB
transfer
time
‐
out:
The
time
‐
out
value
for
Control,
Bulk,
and
Interrupt
transfers.
The
choice:
1
sec,
5
sec,
10
sec,
20
sec
Device
reset
time
‐
out:
USB
mass
storage
device
Start
Unit
Command
time
‐
out.
The
choice:
10
sec,
20
sec,
30
sec,
40
sec
Device
power
‐
up
delay:
USB
mass
storage
device
Start
Unit
Command
time
‐
out.
Figure.
24
USB
Configuration
setting