Chapter 3: InstallationPage 3-42H22-08R SmartSwitch 2208 User’s Guide3.4.2 Rackmount InstallationRackmount installations must be within reach of the network cabling andmeet the requirements listed below:• Locate the 2H22-08R within seven feet of an appropriately groundedpower source and an unrestricted surface area as shown in Figure 3-1that meets the power supply requirements listed in Appendix A.• Maintain a temperature of between 5°C (41°F) and 40°C (104°F) atthe installation site with fluctuations of less than 10°C (18°F) per hour.The 2H22-08R is shipped with a strain-relief bracket for cablemanagement. The rackmount kit contains the rackmount brackets andmounting screws for installing it in a 19-inch rack.Attaching the Strain-Relief BracketUse of the strain-relief bracket is optional, but recommended to reducecable damage and maintain an orderly environment. Attach thestrain-relief bracket to the front of the 2H22-08R as follows:1. Locate the strain-relief bracket and four 8-32 x 3/8-inch pan-headscrews in the rackmount kit.2. Attach the strain-relief bracket to the bottom of the 2H22-08R usingthe four 8-32 x 3/8-inch pan-head screws (Figure 3-2).WARNINGBefore installing the 2H22-08R into a rack, ensure that the racksupports the device(s) without compromising the stability of therack. Otherwise, personal injury and/or equipment damagemay result.!CAUTIONDo not attempt to attach the strain-relief bracket with screwsother than the 8-32 x 3/8-inch screws included with the2H22-08R. Use of longer screws may damage the unit.