1-7Figure 1-4 Rack Mounting the Unit4) Repeat steps 2 and 3 for the other side of the unit.5) Insert the unit into the 19-inch rack and secure with suitable screws (not provided).6) Reconnect the cables.Placing Units On Top of Each OtherIf the switch units are free-standing, up to six units can be placed one on top of the other. If you aremixing a variety of Baseline and Super Stack units, the smaller units must be positioned at the top.If you are placing switch units one on top of the other, you must use the self-adhesive rubber padssupplied. Apply the pads to the underside of each switch, sticking one in the marked area at eachcorner.Place the switch units on top of each other, ensuring that the pads of the upper unit line up with therecesses of the lower unit.Supplying Power to the SwitchPower problems can be the cause of serious failures and downtime in your network. Ensure that thepower input to your system is clean and free from sags and surges to avoid unforeseen networkoutages. 3Com recommends that you install power conditioning, especially in areas prone to blackout,power dips and electrical storms.The unit is intended to be grounded. Ensure it is connected to earth ground during normal use. Installingproper grounding helps to avoid damage from lightning and power surges.Before powering on the switch, verify that the network cables and the power cable are securelyconnected.To power on the switch:1) Plug the power cord into the power socket on the rear panel of the switch.2) Plug the other end of the power cord into a power outlet.
