Allied Telesis AT-8400 Series Reference Manual page 19

Figure 4 illustrates the back panel of the DC model of the AT-8400 Series
switch.
FAN B
AT-8403
Figure 4 Rear Panel of the AT-8400 Series Switch (DC Model)
AT-8400 Chassis Installation Guide
WARNING
This unit might have more
than one power input. To
reduce the risk of electric
shock, disconnect all
power inputs before
servicing unit.
FOR CENTRALIZED DC
POWER CONNECTION,
INSTALL ONLY IN A 40-60VDC
RESTRICTED AREA.
FAN A
AT-8403
B A
40-60VDC INPUT
INPUT
5