IBM IntelliStation Z Pro Type 6221 Hardware Maintenance Manual page 133

v Statement 5
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.
v Statement 23
CAUTION:
Do not place any object weighing more than 50 kg (110 lbs.) on top of
rack-mounted devices.
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