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Power supply statement
DANGER
External devices
CAUTION:
Do not connect or disconnect any external device cables other than Universal Serial Bus (USB) cable
while the computer power is on; otherwise, you might damage your computer. To avoid possible
damage to attached devices, wait at least five seconds after the computer is shut down to disconnect
external devices.
General battery notice
DANGER
outlet adapter or to replace the outlet with one that enables this safety feature. Never overload an
electrical outlet. The overall system load should not exceed 80 percent of the branch circuit rating.
Consult an electrician for more information if you have questions about power loads and branch
circuit ratings.
Be sure that the power outlet you are using is properly wired, easily accessible, and located close to
the equipment. Do not fully extend power cords in a way that will stress the cords.
Be sure that the power outlet provides the correct voltage and current for the product you are
installing.
Carefully connect and disconnect the equipment from the electrical outlet.
Never remove the cover on a power supply or any part that has the following label attached.
Hazardous voltage, current, and energy levels are present inside any component that has this label
attached. There are no serviceable parts inside these components. If you suspect a problem with
one of these parts, contact a service technician.
Personal computers manufactured by Lenovo contain a coin cell battery to provide power to the
system clock. In addition, many mobile products, such as notebook computers, utilize a
rechargeable battery pack to provide system power when in portable mode. Batteries supplied by
Lenovo for use with your product have been tested for compatibility and should only be replaced
with approved parts.
Never attempt to open or service any battery. Do not crush, puncture, or incinerate batteries or short
circuit the metal contacts. Do not expose the battery to water or other liquids. Only recharge the
battery pack strictly according to instructions included in the product documentation.
9


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