Lenovo ThinkCentre M83z Maintenance Manual page 12

DANGER
Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the following:
Laser radiation when open. Do not stare into the beam, do not view directly with optical
instruments, and avoid direct exposure to the beam.
CAUTION:
Use safe practices when lifting.
CAUTION:
The power control button on the device and the power switch on the power supply do not turn off
the electrical current supplied to the device. The device also might have more than one power
cord. To remove all electrical current from the device, ensure that all power cords are disconnected
from the power source.
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ThinkCentre M83z Hardware Maintenance Manual
≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb)