CHAPTER 3: INSTALLATION3-4SEHI USER’S GUIDE3.3.2 Rackmount Installation RequirementsTo install the SEHI in a 19-inch rack, Cabletron Systems offers anaccessory kit to install the SEHI in a 19-inch rack that includes rackmount brackets, mounting screws, and a strain-relief bracket for cablemanagement. The accessory kit is not included with the SEHI, but ispurchased separately from Cabletron Systems as part numberSEHI-ACCY-KIT.Rack mounting the SEHI involves:• Attaching the strain relief bracket• Attaching the rackmount brackets• Installing the SEHI in a 19-inch rack• Interconnecting SEH units when applicableTools Required• Phillips ScrewdriverMaterials RequiredThe following parts are included in the SEHI-ACCY-KIT accessory kit.Use Figure 3-3 to determine the correct brackets to use for thisapplication.• Strain relief bracket• Left and right rackmount brackets• 8-32 x 1/4" panhead screws (4)• 8-32 x 3/8" panhead screws (4)Use only the parts listed above to rack mount the SEHI. Theaccessory kit includes other items not used in this application.Use of the wrong brackets or screws may result in damage tothe unit or cause electrical shock.