IBM System x3550 M4 Installation And User Manual page 10

Important:
Each caution and danger statement in this documentation is labeled
with a number. This number is used to cross reference an English
language caution or danger statement with translated versions of the
caution or danger statement in the Safety Information document.
For example, if a caution statement is labeled "Statement 1,"
translations for that caution statement are in the Safety Information
document under "Statement 1."
Be sure to read all caution and danger statements in this document
before you perform the procedures. Read any additional safety
information that comes with the server or optional device before you
install the device.
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IBM System x3550 M4 Type 7914: Installation and User's Guide