• 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:
https://static.lenovo.com/us/en/serverproven/index.shtml
CAUTION:
1. 240 V dc input (input range: 180-300 V dc) is ONLY supported in Chinese Mainland.
2. Power supplies with 240 V dc are not hot-swappable. To remove the power cord, ensure you
have turned off the server or disconnected the dc power sources at the breaker panel.
3. In order for the ThinkSystem products to operate error free in both a DC or AC electrical
environment, a TN-S earthing system which complies to 60364-1 IEC 2005 standard has to be
present or installed.
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 135. Hot-swap power supply label
Chapter 4. Hardware replacement procedures 175
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