Default Whick Kindle Fire HD 7 I own?

I have very serious doubts on the information presented on the kindle fire hd.
I purchased this tablet (99€ ) (http://www.amazon.it/gp/product/B008...A11IL2PNWYJU7H) and I do not know if this is the first, the second or maybe the third generation kindle fire hd?
I do not know if the roms in the forum (modding area) refer to my tablet and looking at the site of cyanogenmod.com I noticed that there are 2 versions of the kindle fire, otter and otter2, but nothing for kindle fire hd . To which I must refer to my tablet?
Thank you!

PS. I apologize for my English