First pic is without kindle plugged in, second is with it plugged in.
https://imgur.com/a/M9xVlkz
As you can see the both look the same.
It seems I can’t get it to show the green light at the moment though. I’ll put it back on the charge and see if that helps.
Also, I believe I’m using the right cable, but I have two exactly the same but only one kindle so I don’t know where the second one came from. They look the same as those white ones when you image search kindle official cable.