5 
  NOTE: 
The S5120-28C-EI, S5120-52C-EI, S5120-28C-PWR-EI, and S5120-52C-PWR-EI support IRF. For more
information, see "Setting up an IRF fabric."
 
 
Installing the switch into a 19-inch rack 
Installation methods 
You can install a switch into a 19-inch standard rack in one of the following ways: 
•  Use front mounting brackets 
•  Use front mounting brackets and a rack-shelf 
•  Use front mounting brackets and rear mounting brackets 
The installation methods of a switch depend on the depth of the switch. For the specific installation 
methods, see Table 3. 
Table 3 Installation methods 
Me
thod 
Use front mounting 
brackets 
Use front mounting 
brackets and a rack-shelf 
Use front and rear 
mounting brackets 
De
th 
300 mm (11.81 in)  √  √ N/A 
420 mm (16.54 in)  N/A  √  √ 
 
  NOTE: 
For a switch with a depth greater than 300 mm (11.81 in), the front mounting brackets only secure the 
switch rather than bear its weight. 
 
Mounting bracket 
Figure 2 Appearance of a standard front mounting bracket 
 
(1) Screw hole for
attachin
 the mountin
 bracket to the cabinet (Use one M6 screw) 
(2) Screw hole for attaching the switch to the mounting bracket