Lenovo IdeaCentre Horizon Safety And Warranty Manual page 25

5. Both its mainframe and monitor will eradiate heating while the computer
operates. Both the mainframe and the monitor are equipped with corresponding
heating eradiation vents, and the system failure or damage may occur once
these vents are blocked. Hence, ensure that the computer system is placed at a
place with well ventilation and unblocked heating eradiation. It is recommended
that the host, monitor and other objects be 5cm away from each other at least.
Warning
Must fully remove the dustproof shield (if provided) to facilitate the heating
eradiation and ventilation when the computer is running or before the power
supply of the computer is completely switched off.
6. Keep the computer away from objects or environments with electromagnetic
interference (EMI) such as magnets, working mobile phones and electrical
appliances.
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Safety and warranty guide