Cisco 2960X - power inline auto max 15400

Hello,
I have a new stack of five 2960X's and recently started to configure the stack, and found the "power inline auto max 15400" on my 3rd switch in the stack.  I did a "show power inline" and confirmed it set the max to 15.4 instead of the default 30.0 found on the other switches in the stack.  I (nor anyone else) has entered this command on any interfaces on this stack. 
What would trigger this to appear if it was not manually entered?  I noticed this on a single switch in another stack I was working on previously as well.
Thanks,
Matt

If you do a show run all you will see the configuration on the port is :
 power inline auto max 15400
 power inline static max 15400
If you change it to
power inline auto max 30000
the
power inline static max 15400
will go away.
Not sure why some switches default on 15400 and others on 30000.

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