Lenovo ThinkCentre M55e User Manual - Page 13

Operating, environment, Electrical, current, safety, information - drives

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v Do not use non-desktop air filtration devices. Operating environment The optimal environment in which to use your computer is 10°C-35°C (50°F-95°F) with humidity ranging between 35% and 80%. If your computer is stored or transported in temperatures less than 10°C (50°F), allow the cold computer to rise slowly to an optimal operating temperature of 10°C-35°C (50°F-95°F) before use. This process could take two hours in extreme conditions. Failure to allow your computer to rise to an optimal operating temperature before use could result in irreparable damage to your computer. If possible, place your computer in a well-ventilated and dry area without direct exposure to sunshine. Keep electrical appliances such as an electric fan, radio, high-powered speakers, air conditioner, and microwave oven away from your computer because the strong magnetic fields generated by these appliances can damage the monitor and data on the hard disk drive. Do not place any beverages on top of or beside the computer or other attached devices. If liquid is spilled on or in the computer or an attached device, a short circuit or other damage might occur. Do not eat or smoke over your keyboard. Particles that fall into your keyboard can cause damage. Electrical current safety information Danger Electrical current from power, telephone, and communication cables is hazardous. To avoid a shock hazard: v To prevent possible shock hazard, do not use your computer during a lightning storm. v Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. v Connect all power cords to a properly wired and grounded electrical outlet. v Connect to properly wired outlets any equipment that will be attached to this product. v When possible, use one hand only to connect or disconnect signal cables. v Never turn on any equipment when there is evidence of fire, water, or structural damage. v Disconnect the attached power cords, telecommunications systems, networks, and modems before you open the device covers, unless instructed otherwise in the installation and configuration procedures. v Connect and disconnect cables as described in the following table when installing, moving, or opening covers on this product or attached devices. Important safety information xi

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v
Do
not
use
non-desktop
air
filtration
devices.
Operating
environment
The
optimal
environment
in
which
to
use
your
computer
is
10°C-35°C
(50°F-95°F)
with
humidity
ranging
between
35%
and
80%.
If
your
computer
is
stored
or
transported
in
temperatures
less
than
10°C
(50°F),
allow
the
cold
computer
to
rise
slowly
to
an
optimal
operating
temperature
of
10°C-35°C
(50°F-95°F)
before
use.
This
process
could
take
two
hours
in
extreme
conditions.
Failure
to
allow
your
computer
to
rise
to
an
optimal
operating
temperature
before
use
could
result
in
irreparable
damage
to
your
computer.
If
possible,
place
your
computer
in
a
well-ventilated
and
dry
area
without
direct
exposure
to
sunshine.
Keep
electrical
appliances
such
as
an
electric
fan,
radio,
high-powered
speakers,
air
conditioner,
and
microwave
oven
away
from
your
computer
because
the
strong
magnetic
fields
generated
by
these
appliances
can
damage
the
monitor
and
data
on
the
hard
disk
drive.
Do
not
place
any
beverages
on
top
of
or
beside
the
computer
or
other
attached
devices.
If
liquid
is
spilled
on
or
in
the
computer
or
an
attached
device,
a
short
circuit
or
other
damage
might
occur.
Do
not
eat
or
smoke
over
your
keyboard.
Particles
that
fall
into
your
keyboard
can
cause
damage.
Electrical
current
safety
information
Danger
Electrical
current
from
power,
telephone,
and
communication
cables
is
hazardous.
To
avoid
a
shock
hazard:
v
To
prevent
possible
shock
hazard,
do
not
use
your
computer
during
a
lightning
storm.
v
Do
not
connect
or
disconnect
any
cables
or
perform
installation,
maintenance,
or
reconfiguration
of
this
product
during
an
electrical
storm.
v
Connect
all
power
cords
to
a
properly
wired
and
grounded
electrical
outlet.
v
Connect
to
properly
wired
outlets
any
equipment
that
will
be
attached
to
this
product.
v
When
possible,
use
one
hand
only
to
connect
or
disconnect
signal
cables.
v
Never
turn
on
any
equipment
when
there
is
evidence
of
fire,
water,
or
structural
damage.
v
Disconnect
the
attached
power
cords,
telecommunications
systems,
networks,
and
modems
before
you
open
the
device
covers,
unless
instructed
otherwise
in
the
installation
and
configuration
procedures.
v
Connect
and
disconnect
cables
as
described
in
the
following
table
when
installing,
moving,
or
opening
covers
on
this
product
or
attached
devices.
Important
safety
information
xi