I'm going to say NOT... I spoke with someone from Kindle support, the first person told me yes, use it for the Fire ... Assured me this was he correct adaptor and the order was placed while on the phone.. Because I was not totally assured I called back before the order was even received and that representative told me that this was not for the Kindle Fire or Kindle Fire HD. I now have both Kindle keyboard and Kindle Fire and have two separate adaptors.
This Power adapter appears to be for the Kindle, PaperWhite and Touch. I would guess that it would also work for the Kindle Fire, but I can not say for sure. Sorry, I would hate to see it hurt the battery in you Kindle fire. My gut tells me that they just want to sell more accessaries so they change the style for each Kindle.
This charger will work with the Kindle Fire. However, there is a specific Kindle Fire adapter that is the same price and is an "accelerated charger." Your best bet would be to buy that one instead since it will charge your Fire faster than this one will. The accelerated charger is sold by Amazon and is black in color. Good luck!