Allied Telesis AT-8400 Series Reference Manual page 57

AT-8400 Chassis Installation Guide
Note
The brackets are designed to be installed in a 3.5RU opening on a
standard rack.
7
8
9
1 0
1 1
1 2
Figure 20 Installing the Chassis in a Rack
5. Do not apply power at this time. Connect the frame ground to the
chassis. Refer to Connecting the Frame Ground on page 84.
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