- Download
Software
- Research a
Problem - Case Management
- Communities and Forums
- Contract & Product Management
- Technical Documentation Advanced Search
- Documentation Feedback Form
- Documentation Symbols Key
- End-of-Life Products
- Guidelines and Policies
- Security Resources
Juniper was the first North American IP routing vendor to achieve the prestigious TL 9000 certification by the Quality of Excellence for Suppliers of Telecommunications (QuEST) Forum in the router category, for design, development, provision and service and support.
What is J-Care?
It's the world-class service and support that you expect from a company that delivers the industry's best infrastructure and security products. With J-Care, you now have the confidence knowing that Juniper will do our part to keep you on top of the world!
M120 AC Power Supply Description
In the AC power configuration, the router contains two AC power supplies (see Figure 1), located vertically at the rear of the chassis in slots PEM0 through PEM1 (left to right). Each AC power supply provides power to all components in the router. When two power supplies are present, they share power almost equally within a fully populated system.
Two AC power supplies provide full power redundancy. If one power supply fails or is removed, the remaining power supply instantly assumes the entire electrical load without interruption. One power supply provides the maximum configuration with full power for as long as the router is operational.
Each AC power supply has two AC appliance inlets. Each requires a dedicated AC power feed. For 100-120 VAC, both inlets are used and the bottom inlet cover must be removed prior to installation. For 200-240 VAC, only the top inlet is used.
Figure 1: M120 AC Power Supply
