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.
Installation and Troubleshooting 2 - 13