Allied Telesis X8106 User Manual

Chapter 3: Installing the Chassis in an Equipment Rack

80

The chassis has two pre-installed equipment rack brackets. You may 
adjust the brackets so that the front of the chassis is flush with, extends 
beyond, or is recessed behind the front of the equipment rack. You may 
also install the brackets so that the rear panel of the chassis is flush with 
the front of the equipment rack.

You adjust the brackets by removing them and re-installing them in 
different positions on the sides of the chassis. The bracket positions are 
listed in Table 20 and illustrated in Figure 35 on page 81 and Figure 36 on 
page 81. Please review the following information before moving the 
brackets:



Position A, the default position, positions the chassis so that the 
front of the unit is flush with the front of the equipment rack.



Position B recesses the front of the chassis by 27.39 mm (1.1 in).



Positions C to E extend the front of the chassis beyond the front of 
the rack from 27.39 mm (1.1 in) to 140.85 mm (5.545 in).



Position F installs the chassis with the rear panel flush with the 
front of the equipment rack.



To install the rack mount brackets in position “E,” you have to 
remove the two chassis screws from the bottom-middle section of 
the chassis and re-install them in front where the rack mount 
bracket screws were originally, as shown in Figure 35 on page 81.



The dimension (X) between the front panel and the rack rails is 
given for each rack mounting bracket position in Table 20.

Table 20. Front Panel to Rack Rail Dimensions

A 
(Factory Installed - Flush)

3.69 mm (0.145 in)

B
(Recessed)

-27.39 mm (-1.078 in)

C

27.39 mm (1.078 in)

D

47.71 mm (1.878 in)

E

140.85 mm (5.545 in)

F
(Reverse Position)

374.16 mm (14.731 in)