3Com 3C17700 - SuperStack 3 Switch 4900, Руководство по началу работы

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22 C
HAPTER
2: I
NSTALLING THE
S
WITCH
Package Contents
■
Switch unit
■
CD-ROM
■
This Guide
■
Management Quick Reference Guide
■
Release Notes
■
Warranty Flyer
■
Power Cord
■
2 x securing brackets
■
6 x screws
■
4 x rubber feet
Choosing a Suitable
Site
The Switch is suited for use in an internal wiring closet, a network room,
or telecommunications room, where it can be mounted in a standard
19-inch equipment rack, or free-standing.
CAUTION: Ensure that the ventilation holes are not obstructed.
To ensure this product provides optimum performance, high speed fans
are used to provide ventilation. These fans have a high audible output.
When deciding where to position the Switch, ensure that:
■
Cabling is located away from:
■
sources of electrical noise such as radios, transmitters and
broadband amplifiers.
■
power lines and fluorescent lighting fixtures.
■
The Switch is accessible and cables can be connected easily.
■
Water or moisture cannot enter the case of the Switch.
■
Air flow is not restricted around the Switch or through the vents in the
side of the Switch. 3Com recommends that you provide a minimum of
25 mm (1 in.) clearance.
■
Air temperature around the Switch does not exceed 40 °C (104
°
F).
If the Switch is installed in a 19-inch rack or closed assembly its local air
temperature may be greater than room ambient temperature.