3
INSTALLING THE SWITCH
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CAUTION: When you ask your sales agent to maintain the switch, you must
ensure that the dismantlement-preventive seal on a mounting screw of the 3Com
switch chassis is intact. If you want to open the chassis, you should contact the
agent for permission. Otherwise, you will bear any consequence resulting from
your actions without permission.
Installing the Switch
into a 19-Inch Cabinet
You can install the switch into a 19-inch standard cabinet in one of the following
four ways:
■ Use front mounting ears
■ Use front mounting ears and rear mounting ears
■ Use front mounting ears and a tray
■ Use front mounting ears and guide rails
The selection of installation methods depends on the width and depth of the
switch. For the installation methods, see Table 12.
n
■ When the depth of a switch is greater than 300 mm (11.8 in), the front
mounting ears only secure the switch rather than bear its weight.
■ Guide rails purchased from 3Com apply only to standard cabinets 1,000 mm
(39.4 in) deep. Use other supports to substitute for guide rails in the case of
other cabinet depths.
Introduction to
Mounting Ears
Figure 17 shows the appearance of a front mounting ear.
Table 12 Installation methods for a switch with a width of 440 mm (17.3 in) or 436 mm (17.2 in.)
Method/
Depth
Use front
mounting ears
Use front and
rear mounting ears
Use front mounting
ears and a tray
Use front mounting
ears and guide rails
≤300 mm (11.8 in) ✔ - ✔✔
360 mm (14.2 in.) - ✔✔ ✔
420 mm (16.5 in) - ✔✔ ✔
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