MSI PRIMO 81 - Manual (Page 6)

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Š The unit should be operated under maximum ambient temperature of 40°C
(120°F).
Š Make sure the power voltage is within safety range and has been adjusted
properly to the value of 100~240V before connecting the equipment to the
power outlet.
Š Always unplug the AC power cord before installing any add-on card or module
to the equipment.
Š Always disconnect the AC power cord or uninstall the battery pack or switch off
the wall socket if the equipment would be left unused for a certain time to
achieve zero energy consumption.
Never pour liquid into the opening that could damage the equipment or cause an
electrical shock.
Place the power cord in a way that people are unlikely to step on it. Do not place
anything on top of the power cord.
Always keep the strong magnetic or electrical objects away from the equipment.