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Installation and Troubleshooting 2 - 13
Figure 2-5. Chassis Mounted in Rack
Table Top Mounting the ONline Concentrator
You can set the ONline Concentrator directly on a table top or shelf that
can support at least 100 pounds (45 kg). A fully loaded concentrator
weighs about 75 lbs (34 kg). 3Com recommends you set the unit on top of
the ONline cable tray as the cable tray provides a central area for cable
management and provides the required 1 3/4" (4.5 cm) of clearance for
sufficient air flow. Regardless of whether the cable tray is used or not, the
four (4) rubber feet must remain on the bottom of the unit.
If the cable tray is used, place the ONline unit on top of the cable tray and
insert the rubber feet from the unit into the holes in the cable tray, which
stabilizes the unit on the tray.
If the cable tray is not used, place the unit on the table or shelf.