Same PoE, suddenly displayed as "802.3at" instead of "Generic Power Supply"

Yesterday, I noticed that a few of our ePMP2000 Access Points that are using the default cambium power supply show "802.3at" as the power supply, when they read "Generic Power Supply" previously.  Some of them still read Generic Power Supply, but I was just curious as to why this might change in the radio GUI despite using the same type of power supply.  Does anyone have any insight into this?  

I have no wisdom... other than to say I have AP's which do the same thing.  I'm only using real Cambium power supplies on everything, and some of them report "Generic"


Hmm, well it's comforting to know we aren't the only ones having this happen.