Allied Telesis x310 Series - Manual (Page 76)

Chapter 4: Installing the Switch on a Wall
76
Figure 33. Switch on a Plywood Base
The plywood base allows you to mount the switch on two wall studs.
Without the base, only one bracket could be attached to a stud. This is
because the standard distance between two studs in a wall is 41
centimeters (16 inches) while the distances between the two brackets on
the switches are 26.7 centimeters (10 1/2 inches) for the AT-x310-50FT
Switch and 31.8 centimeters (12 1/2 inches) for the AT-x310-26FP and
AT-x310-50FP Switches. Refer to Figure 34 on page 77.
Wall Studs
Wall
Plywood Base