H3C S5500-EI Series - Figure 3-7 Fix Rear Mounting Ears

Quick Start
H3C S5500-EI Series Ethernet Switches
Chapter 3 Installation
3-9
 Note:
There are three positions to mount a load-bearing screw on both sides
of a switch (only two positions on both sides of the S5500-28F-EI).
You should select a proper position according to the actual
requirements. The rear mounting ears support the switch by tightly
contacting with the load-bearing screws.
4) Select a position to install the switch and fix the rear
mounting ears to the rear brackets with screws and captive
nuts, as shown in
Figure 3-7.
Rear square-holed rack
Figure 3-7 Fix rear mounting ears