3-13 InstallationOn a mounting screw of the chassis of the H3C S3100 Series Ethernet Switches, there is a seal labeledwith H3C. You must keep it intact before asking the agent to maintain the switch. You must get thepermission of the local agent before you can open the chassis. Otherwise, you will be responsible forirreversible damages caused by your operations.Installing a SwitchCabinet MountingYou can install a switch into a 19-inch standard cabinet in one of the following four ways:z Use front mounting earsz Use front mounting ears and a trayz Use front mounting ears and rear mounting earsz Use front mounting ears and guide railsThe installation methods of a switch depend on the depth and width of the switch. For the specificinstallation methods, see Table 3-1 and Table 3-2.Table 3-1 Installation methods for a switch with a width of 440 mm or 436 mm (17.3 in. or 17.2 in.)MethodDepthUse frontmounting earsUse front andrear mountingearsUse frontmounting earsand a trayUse frontmounting earsand guide rails≤ 300 mm (11.8 in.) √ — √ √360 mm (14.2 in.) — √ √ √420 mm (16.5 in.) — √ √ √Table 3-2 Installation method for a switch with a width less than 436 mm (17.2 in.)MethodDepthUse frontmounting earsUse front andrear mountingearsUse frontmounting earsand a trayUse frontmounting earsand guide rails≤300 mm (11.8 in.) √ — √ —360 mm (14.2 in.) — — √ —420 mm (16.5 in.) — — √ —