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Power over Ethernet cannot be configured or enabled due to a missing jumper cable on a 2800 ISR with HWIC-D-9ESW-POE module
To determine if inline power is available, issue the show power inline command.
If the command indicates that no inline power is availabe, there is likely either no inline daughter card or a problem with the daughter card or inline power supply. In this particular case, the jumper cable between the inline power daughter card and inline power supply is missing.
Note: This part number (HWIC-D-9ESW-POE) should be ordered only if you require inline power. It includes the inline power daughterboard. However, you must also order the matching internal power supply to support in-line power on a Cisco 2800 or Cisco 3800 router. The jumper cable is delivered with the internal power supply.