Lenovo System x3300 M4 Installation And Service Manual page 93

The following notes describe the type of power supply that the server supports and other information that
you must consider when you install a power supply:
• To confirm that the server supports the power supply that you are installing, see http://www.lenovo.com/
serverproven/.
• Before installing an additional power supply or replace a power supply with one of a different wattage,
the user may use the Power Configurator utility to determine current system power consumption. For
more information and to download the utility, go to http://www-03.ibm.com/ systems/bladecenter/
resources/powerconfig.html
• The server comes with one hot-swap 12-volt output power supply that connects to power supply bay 1.
The input voltage is 100 - 127 V ac or 200 - 240 V ac auto-sensing.
• Power supplies in the server must be with the same power rating or wattage to ensure that the server
will operate correctly.
• Power supply 1 is the default/primary power supply. If power supply 1 fails, you must replace the power
supply with the same wattage immediately.
• The user can order an optional power supply for redundancy.
• These power supplies are designed for parallel operation. In the event of a power-supply failure, the
redundant power supply continues to power the system. The server supports a maximum of two
power supplies.
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.
Statement 8
CAUTION:
Never remove the cover on a power supply or any part that has the following label attached.
.
Chapter 2 Installing optional devices
79