Lenovo x3550 M5 Installation And Service Manual page 214

Step 3. If you are installing a hot-swap power supply into an empty bay, remove the power-supply filler
from the power-supply bay.
Power
supply
filler
Power
supply
release tab
Figure 119. Power supply installation
Step 4. Grasp the handle on the rear of the power supply and slide the power supply forward into the
power-supply bay until it clicks. Make sure that the power supply connects firmly into the
power-supply connector.
Attention: Do not mix 550-watt, 750-watt, 900-watt or 1500-watt power supplies in the server.
Step 5. Route the power cord through the handle and cable tie if any, so that it does not accidentally
become unplugged.
Step 6. Connect the power cord for the new power supply to the power-cord connector on the power
supply.
Step 7. Connect the other end of the power cord to a properly grounded electrical outlet.
Step 8. Make sure that the ac power LED and the dc power LED on the ac power supply are lit, indicating
that the power supply is operating correctly. The two green LEDs are to the right of the power-cord
connector.
Step 9. If you are replacing a power supply to the server, attach the redundant power information label that
comes with this option on the server cover near the power supplies.
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Lenovo System x3550 M5 Installation and Service Guide
Power
supply