H3C S5100-SI series Quick Start Manual page 35

Quick Start
H3C S5100-SI/EI Series Ethernet Switches
Figure 3-2 shows the appearance of a rear mounting ear.
(1) Screw hole used to fix the mounting ear to the rack (Use one M6 screw)
Figure 3-2 Appearance of a rear mounting ear
When you install an H3C S5100 series switch into a 19-inch
standard rack, you should select front mounting ears with a proper
length (L1 as shown in Figure 3-1) according to the physical
dimensions of the switch. For the selection of front and rear mounting
ears, see Table 3-3.
Chapter 3 Installing the Switch
3-4