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8 A
BOUT
T
HIS
G
UIDE
Conventions
Table 1 and Table 2 list conventions that are used
throughout this guide.
Removing and replacing the fan
tray assembly
“Fan Tray Assembly Removal and
Replacement” on page 45
Complying with environmental
and compliance specifications
Appendix A: System
Specifications
Installing field-replaceable
components
Appendix B: Field-Replaceable
Units
Checking your site for
environmental and safety
requirements
Appendix C: Site Requirements
and Safety Codes
Getting help from your network
supplier or 3Com
Appendix D: Technical Support
Returning 3Com products to
3Com for repair
“Returning Products for Repair”
on page 57
Tabl e 1
Notice Icons
Icon Type Description
Information
Note
Information that describes important
features or instructions
Caution Information that alerts you to potential loss
of data or potential damage to an
application, system, or device
Warning Information that alerts you to potential
personal injury
For information on Turn to
Tab le 2
Text Conventions
Convention Description
Screen
display
This typeface represents information as it appears
on the screen.
Commands
The word “command” means that you must
enter the command exactly as shown and then
press Return or Enter. Commands appear in bold.
Example:
To update the system software, enter the
following command:
system softwareUpdate
This guide always gives the full form of a
command in uppercase and lowercase letters.
However, you can abbreviate commands by
entering the fewest letters in each command that
identify a unique command. Commands are not
case sensitive.
The words “enter”
and “type”
When you see the word “enter” in this guide,
you must type something, and then press Return
or Enter. Do not press Return or Enter when an
instruction simply says “type.”
Keyboard key
names
If you must press two or more keys
simultaneously, the key names are linked with a
plus sign (+). Example:
Press Ctrl+Alt+Del
Words in
italics
Italics are used to:
■
Emphasize a point.
■
Denote a new term at the place where it is
defined in the text.