Would it be necessary to connect the two DC inputs of a Cisco IE2000 to the same power supply? In spite of the fact that this is not fully redundant, DC-A and DC-B inputs are connected to separate internal power supplies. Consequently, I believe both DC-A and DC-B could be powered by the same external power supply... Thank you very much for your response. The power supply is split into two separate units. Single-source or dual-source power can be used to power the switch. It is the higher voltage power source that draws power from both power sources when both are operational. Switches are powered by other sources during power outages. In systems configured with redundant power sources, each power supply should be connected to an independent power source. Failure to do this could result in a total power failure due to a fault with the external wiring or a trip in the circuit breaker.
