3Com DUA1698 User Manual

Also see for 3300 XM: User guide

24 C HAPTER 2: INSTALLING THE SWITCHChoosing a SuitableSiteThe Switch is suited for use in an office environment where it can bemounted in a standard 19-inch equipment rack, or free standing.Alternatively, the Switch can be rack-mounted in a wiring closet orequipment room. A rack-mounting kit, containing two mountingbrackets and four screws, is supplied with the Switch.When deciding where to position the Switch, ensure that: You are able to meet the configuration rules detailed in“Configuration Rules for Fast Ethernet” on page 20. The Switch is accessible and cables can be connected easily. Cabling is away from: Sources of electrical noise such as radios, transmitters andbroadband amplifiers Power lines and fluorescent lighting fixtures Water or moisture cannot enter the case of the Switch. Air-flow is not restricted around the Switch or through the vents in theside of the Switch. We recommend that you provide a minimum of25mm (1in.) clearance. No more than four Switch units are placed on top of one another, ifthe units are free standing. If used in an office environment, the switch is positioned so that anynoise from the fan is not disruptive.Rack-mounting The Switch is 1U high and fits in most standard 19-inch racks.CAUTION: Disconnect all cables from the Switch before continuing.Remove all self adhesive pads from the underside of the Switch if theyhave been fitted.1 Place the Switch the right way up on a hard flat surface, with the frontfacing towards you.2 Locate a mounting bracket over the mounting holes on one side of theSwitch, as shown in Figure 7.