Juniper JUNOS - NETWORK OPERATION GUIDE REV1 User Manual

Understanding Power Supplies ! 223
Chapter 18: Monitoring Power Supplies
M40 Router Power Supplies
The M40 router can use either AC or DC power. Two load-sharing power supplies
install into the bays located at the bottom rear of the chassis. As viewed from the
rear of the chassis, the supply on the left is referred to as supply
A and the supply on
the right as supply
B. Figure 89 shows the M40 router power supplies and where
they are installed in the chassis.
The power supplies are fully redundant. When both power supplies are operational,
they automatically share the electrical load. If one power supply stops functioning
for any reason, the remaining power supply instantly begins providing all the power
the router needs for normal functioning, and can provide full power indefinitely.
Figure 89: M40 Router Power Supplies
Power
supply A
M40 router
AC power supply
Power
supply B
1765
DC power supply

Juniper JUNOS - NETWORK OPERATION GUIDE REV1 Specifications

General

Brand	Juniper
Model	JUNOS - NETWORK OPERATION GUIDE REV1
Category	Software
Language	English