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Install a power supply unit

Follow the instructions in this section to install a power supply unit.

About this task

shock hazard
Electrical current from power, telephone, and communication cables is hazardous.

To avoid a shock hazard:

  • Connect all power cords to a properly wired and grounded electrical outlet/source.
  • Connect any equipment that will be attached to this product to properly wired outlets/sources.
  • When possible, use one hand only to connect or disconnect signal cables.
  • Never turn on any equipment when there is evidence of fire, water, or structural damage.
  • The device 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.
disconnect all power
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.
240VA shock hazard

Hazardous energy present. Voltages with hazardous energy might cause heating when shorted with metal, which might result in spattered metal, burns, or both.

shock hazard

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.

  • Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

  • Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system.

The following tips describe the type of power supply unit that the server supports and other information to be consider when installing a power supply unit:
  • The standard shipping has only one power supply unit installed in the server. For redundancy and hot-swap support, installing an additional power supply unit is a must. Certain customized models might be shipped with two power supplies installed.

  • Ensure that the devices to be installed are supported. For a list of supported optional devices for the server, go to: Lenovo ServerProven website

    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.

    • Ensure that the two power supply units installed on the server have the same wattage.

    • When replacing the existing power supply unit with a new power supply unit of different wattage, attach the power information label that comes with this option onto the existing label near the power supply unit.

Figure 1. Power supply unit label
Power supply unit label

240 V dc warning statement


NEVER CONNECT AND DISCONNECT THE POWER SUPPLY CABLE AND EQUIPMENT WHILE YOUR EQUIPMENT IS POWERED ON WITH DC SUPPLY (hot-plugging). Otherwise the equipment and result in data loss may be damaged, the damages and losses result from incorrect operation of the equipment will not be covered by the manufacturers’ warranty.


  1. Remove a power-supply-bay filler, if any.
    To ensure proper cooling during normal server operation, both of the power supply bays must be occupied. This means that each bay must have a power supply unit installed; or one has a power supply unit installed and the other has a power-supply filler installed.
  2. Note the orientation of the power supply unit; then, slide it into the chassis until it snaps into position.
    Figure 2. Installation of a power supply unit or PSU filler
    Hot-swap power supply installation

After this task is completed

  1. Connect the power cable to the power supply and a properly grounded electrical outlet.

  2. Pull the handle to ensure the power supply unit is properly installed.

  3. If the server is powered off, power on the server. Ensure that both the power input LED and the power output LED on the power supply are lit, indicating that the power supply is operating properly.

  4. Complete the parts replacement. See Complete the parts replacement.