Juniper M5/M10 AC Power Supply
M5/M10 Router Power Supplies
Two load-sharing, isolated power supplies are located at the bottom rear of the M5 and M10 router chassis. The routers use either AC or DC power. Figure 1 shows the M5 and M10 router power supplies and where they are installed in the chassis.
Figure 1: M5 and M10 Router Power Supplies
When the power supplies are installed and operational, they automatically share the electrical load. If a 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.
Note: Mixing AC and DC power supplies is not supported. The two power supplies must be either both AC or both DC.
When two power supplies are installed, at least one Routing Engine and one FPC must also be installed for both power supplies to power on. In the absence of this minimum load, only one power supply starts. (The router powers on and operates correctly with one power supply, but without the redundancy benefit of having a second power supply installed.)
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