Lenovo ThinkAgile HX1521-R User Manual page 60

• The standard shipping has only one power supply installed in the server. For redundancy and hot-swap
support, you must install an additional hot-swap power supply. Certain customized models might be
shipped with two power supplies installed.
• Ensure that the devices that you are installing are supported. For a list of supported optional devices for
the server, go to:
http://www.lenovo.com/us/en/serverproven/
Notes:
• Ensure that the two power supplies installed on the server have the same wattage.
• If you are replacing the existing power supply with a new power supply of different wattage, attach the
power information label that comes with this option onto the existing label near the power supply.
Figure 23. Hot-swap power supply label on the cover
S035
CAUTION:
Never remove the cover on a power supply or any part that has this 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.
S002
CAUTION:
The power control button on the device and the power switch on the power supply do not turn off the
electrical current that is 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.
S001
56
User Guide forThinkAgile HX1521-R Node ThinkAgile HX3521-G NodeThinkAgile HX5521 NodeThinkAgile HX5521-C
NodeThinkAgile HX7521 Node