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Indicator
Meaning
1
Ultrabay
Slim
status
Green:
An
Ultrabay
Slim
device
is
installed
and
in
use.
Blinking
green:
An
Ultrabay
Slim
device
is
in
the
process
of
being
detached.
Turn
off:
An
Ultrabay
Slim
device
is
ready
to
be
attached
or
detached.
Note:
If
you
are
using
Windows
2000,
the
Ultrabay
Slim
status
indicator
does
not
blink
while
an
Ultrabay
Slim
device
is
being
detached.
Instead,
a
message
box
pops
up
when
the
process
is
completed;
then
the
indicator
turns
off.
2
Standby
status
Green:
The
computer
is
in
standby
mode.
Blinking
green:
The
computer
is
entering
standby
mode
or
hibernation
mode,
or
is
resuming
normal
operation.
3
Battery
status
Green:
The
battery
is
in
use
and
has
enough
power.
The
ac
adapter
has
charged
the
battery
completely.
Blinking
green:
The
battery
is
being
charged,
but
still
has
enough
power
to
operate.
(At
regular
intervals,
the
indicator
light
turns
off
briefly.)
Orange:
The
battery
is
being
charged,
but
the
battery
power
is
still
low.
Blinking
orange:
The
battery
needs
to
be
charged.
When
the
indicator
starts
blinking
orange,
the
computer
beeps
three
times.
4
Power
on
Green:
The
computer
is
on
and
ready
to
use.
This
indicator
stays
lit
whenever
the
computer
is
on
and
is
not
in
standby
mode.
(continued)
Product
overview
ThinkPad
T40/T40p,
T41/T41p,
T42/T42p
Series
51