• Supported Platforms
• T640 Routers

• Related Topics
• Powering On a DC-Powered T640 Router
• Maintaining the T640 Power Supplies
• T640 DC Power System Electrical Specifications

T640 Power System Description

The T640 Core Router supports these power supplies:

• Two Two-input 160-A DC power supplies are supported in Junos OS Release 5.3 and later.
• Two Three-input 240-A DC power supplies in 2-INPUT mode are supported in Junos OS Release 8.5 and later.
• Two Four-input 240-A DC power supplies are supported in Junos OS Release 10.0 and later.

Note: Mixing power supplies with a different number of inputs in the same router is supported only during upgrade. Mixing different types of power supplies is not supported during normal operations.