IBM System x3300 M4 Installation And Service Manual page 420

13. If you are adding a power supply to the server, attach the redundant power
14. If you are instructed to return the drive backplane, follow all packaging
If you have other devices to install or remove, do so now. Otherwise, go to
"Completing the installation" on page 104.
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System x3300 M4 Type 7382: Installation and Service Guide
information label that comes with this option on the server cover near the
power supplies.
instructions, and use any packaging materials for shipping that are supplied
to you.