I have searched all over including downloading manuals and can’t find the answer.
Didn’t you know.
The proxmark is:-
- Intuiative : Multiple Status LEDs for at-a-glance status checking
Super intuitive. 
Here is part of an answer for you
and the guide from which it came
Proxmark3 V2 User Guid.pdf (2.7 MB)
and I will add that to
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There is also a guide I was thinking of to direct you to, it talks about the LEDs and their use in standalone mode.
It is a little older so I’m not 100% the leds have the same purpose/meaning currently.
Either read through it or scroll down until you see
step 1
When I have some more time up my sleeve, I’ll find you something better…
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Cool so I was right (didn’t post as I didnt want to seem dumb) the function leds only really have a use in standalone mode.
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Reminds me of a great proverb!
“It is better to remain silent and have people think you are stupid, than open your mouth and prove it”
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