Lenovo Portable Computer User Guide
3.2.3.2
Power
on
display
This
function
works
only
when
any
external
display
is
connected.
The
power
on
display
will
be
in
CRT
mode
only
when
you
select
Auto
‐
Selected;
It
displays
both
the
integrated
LCD
screen
and
CRT
screen
when
select
Simultaneous.
3.2.3.3
Legacy
USB
Support
Enables
or
disables
legacy
USB
device
support
under
DOS
mode.
Use
the
[Enter]
bar
to
select
the
USB
Supports
by
BIOS
option
or
not.
3.2.4
The
Security
menu
The
Notebook
ʹ
s
advanced
security
system
allows
you
to
set
a
password
to
prevent
unauthorized
access
to
system
resources,
data,
and
the
BIOS
Setup
program.
Selecting
Security
from
the
menu
bar
displays
the
Security
menu.
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