Kindle Fire HD 7 2014 Quad Core ... rootable? topic

I won a brand new, still sealed Kindle Fire HD 7 that was listed as blacklisted on eBay. I have bought many online and rooted them and placed a custom ROM on them so I thought it was no big deal. When it arrived I noticed on the box it said it is Quad Core with two cameras! I didn't even know that existed. Anyway I attempted to register it under my account and it keeps saying "the information entered doesn't match and Amazon account." I logged in fine on the website with the same information. Attempted my wife's also and got the same results. Oh well, I planned on rooting it anyway so I came to this site and I am not seeing any info on doing it for this model.

Is this one rootable? Version number is 20.4.1.0.