External devices, Batteries, External – Lenovo ThinkCentre M57e Manuel d'utilisation
Page 16: Devices
Do
not
bend
or
modify
the
plug.
If
the
plug
is
damaged,
contact
the
manufacturer
to
obtain
a
replacement.
Do
not
share
an
electrical
outlet
with
other
home
or
commercial
appliances
that
draw
large
amounts
of
electricity;
otherwise,
unstable
voltage
might
damage
your
computer,
data,
or
attached
devices.
Some
products
are
equipped
with
a
three-pronged
plug.
This
plug
fits
only
into
a
grounded
electrical
outlet.
This
is
a
safety
feature.
Do
not
defeat
this
safety
feature
by
trying
to
insert
it
into
a
non-grounded
outlet.
If
you
cannot
insert
the
plug
into
the
outlet,
contact
an
electrician
for
an
approved
outlet
adapter
or
to
replace
the
outlet
with
one
that
enables
this
safety
feature.
Never
overload
an
electrical
outlet.
The
overall
system
load
should
not
exceed
80
percent
of
the
branch
circuit
rating.
Consult
an
electrician
for
more
information
if
you
have
questions
about
power
loads
and
branch
circuit
ratings.
Be
sure
that
the
power
outlet
you
are
using
is
properly
wired,
easily
accessible,
and
located
close
to
the
equipment.
Do
not
fully
extend
power
cords
in
a
way
that
will
stress
the
cords.
Be
sure
that
the
power
outlet
provides
the
correct
voltage
and
current
for
the
product
you
are
installing.
Carefully
connect
and
disconnect
the
equipment
from
the
electrical
outlet.
External
devices
Do
not
connect
or
disconnect
any
external
device
cables
other
than
USB
and
1394
cables
while
the
computer
power
is
on;
otherwise,
you
might
damage
your
computer.
To
avoid
possible
damage
to
attached
devices,
wait
at
least
five
seconds
after
the
computer
is
shut
down
to
disconnect
external
devices.
Batteries
All
personal
computers
manufactured
by
Lenovo
contain
a
non-rechargeable
coin
cell
battery
to
provide
power
to
the
system
clock.
In
addition,
many
mobile
products,
such
as
notebook
computers,
utilize
a
rechargeable
battery
pack
to
provide
system
power
when
in
portable
mode.
Batteries
supplied
by
Lenovo
for
use
with
your
product
have
been
tested
for
compatibility
and
should
only
be
replaced
with
approved
parts.
Never
attempt
to
open
or
service
any
battery.
Do
not
crush,
puncture,
or
incinerate
batteries
or
short
circuit
the
metal
contacts.
Do
not
expose
the
battery
to
water
or
other
liquids.
Only
recharge
the
battery
pack
strictly
according
to
instructions
included
in
the
product
documentation.
12
Safety
and
Warranty
Guide