Cisco Systems 100/200/300/400 用户手册

This appendix provides the information for connecting DC power to a CDE. This appendix includes the 
following sections:

Prior to connecting DC Power to a CDE, consult the Regulatory Compliance and Safety Information for 
the Cisco Content Delivery Engine 100/200/300/400 document for important regulation and safety 
information.

The CDE200, CDE300 and CDE400 can accept DC power (CDE100s do not have a DC power option). 
The CDEs can accept power from a –48 VDC (–42 to –56 VDC) source that connects to one (primary) 
or two (secondary/redundant) –48 VDC power modules (PMs). Each DC PM must be connected to a 
dedicated 60A regulated source. 

 shows a DC PM for a CDE200.

In this chapter, the power supply is referred to as a “power module.”

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