Lenovo System x3300 M4 Installation And Service Manual page 260

Step 4. If you are instructed to return the power supply, follow all packaging instructions, and use any
packaging materials for shipping that are supplied to you.
Replacing a fixed power supply
Use this information to replace a fixed power supply.
The following notes describe the type of power supply that the server supports and other information that
you must consider when you replace a power supply:
• To confirm that the server supports the power supply that you are installing, see http://www.lenovo.com/
serverproven/.
• Before replacing 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 input voltage is 100 - 127 V ac or 200 - 240 V ac auto-sensing.
Statement 8
CAUTION:
Never remove the cover on a power supply or any part that has the following label attached.
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System x3300 M4 Installation and Service Guide