2 
Installing the switch in a 19-inch rack 
Installation methods 
Table 9 Installation methods 
Applicable 
switch models 
Installation 
method 
Requirements and 
guidelines 
Installation procedure 
S5170-28S-EI 
S5170-54S-EI 
S5170-54S-EI-DP 
S5170-28S-HPW
R-EI 
S5170-54S-PWR-
EI 
S5170-36F-EI 
S5170-36F-EI-DP 
S5570S-28S-EI 
S5570S-54S-EI 
S5570S-36F-EI 
S5570S-54F-EI 
S5570S-28S-HP
WR-EI-A 
S5570S-54S-PW
R-EI-A 
Using front 
mounting brackets 
Select an installation position for 
the front mounting brackets as 
required: near the power supply 
side or port side. For the 
S5170-28S-EI, S5170-54S-EI, 
S5170-36F-EI, and 
S5170-36F-EI-DP switches, the 
front mounting brackets can be 
installed only near the port side. 
See "Rack-mounting the 
switch by using front 
mounting brackets." 
S5570S-28S-HP
WR-EI 
S5570S-54S-PW
R-EI 
S5570S-30MS-U
PWR-EI 
Using front and 
rear mounting 
brackets 
•  Select an installation position 
for the front mounting 
brackets as required: near the 
power supply side or port 
side. 
•  Install the rear mounting 
brackets based on the rack 
depth (distance between the 
front and rear rack posts). 
  If the rack depth is in the 
range of 429 to 595 mm 
(16.89 to 23.43 in), orient 
the rear mounting 
brackets with the wide 
flange inside the rack. 
  If the rack depth is in the 
range of 274 to 440 mm 
(10.79 to 17.32 in) and the 
distance from the rear 
rack posts to the inner 
surface of the cabinet 
door is greater than 153 
mm (6.02 in), orient the 
rear mounting brackets 
with the wide flange 
outside the rack. 
•  If you are to install a 
PSR1110-56A power supply, 
make sure the rack depth is 
larger than 600 mm (23.62 in) 
See "Rack-mounting the 
switch by using front and 
rear mounting brackets."