Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: what adapter cable do i need to use the keyboard? i have a kindle fire..
Document: Nice case. Love the color. For my Kindle Fire , it fits, but the weight of the tablet makes it slide when it's on it's side. You have to be careful that it doesn't fall out , but not loose. I bought the USB adapter really cheap. Read there was a setting you can change to make the keyboard work, but no luck figuring it out yet. Even if the keyboard never works, it's worth the price just to use it as a case!
Aside the long shipping time the case does not fit my Kindle and slides out when held at certain angles. They did not tell me I needed to purchase an adapter to use the keyboard. And when I purchased the adapter it still doesn't work.
Nice little case/keyboard. What does 'nice' mean? It is fairly well-made. A great shade of purple. The picture frame holder on the back is pretty sturdy. Keyboard looks good (I couldn't tell you how it functions because I CANNOT find a micro USB  to OTG cable to fit it!!!! I am quite frustrated with that aspect but I suppose it is not the fault of the product since it clearly states that you will need a OTG cable.
IMPORTANT!!! this does not work any kindle fire. DO NOT buy this if you have a kindle fire,HD or HDX or any other kind
Does it work for a kindle fire? I wonder. I hope you should know that.Hi my name is onika.by thanks for everythingSincerely,Onika
The case itself is nice. I like the stand and the magnetic closure. Unfortunately, the keyboard is very cheap and I couldn't get the stylus to work on my tablet. I didn't like the place to keep the cord either. It's thin and awkward to get the cord in, and if you need an adapter for the keyboard to connect to your tablet (like I do), the cord is too long to fit in the holder and just hangs out and gets in the way.
When it came, it was great. I figured I just needed to charge my Kindle--that that was why it didn't work. While it is attractive and seems to be what I need and want, I have not been able to utilize it.
So first off I was not aware that there wasn't an USB to micro adapter included, which was a bummer because I was very excited to use the product. Obviously I ordered an adapter, that just came in today. Well....the keyboard isn't workering. Pretty bummed.
Bought this for my daughter for Christmas for her kindle and does not work and cant even find the cords to use it. Was recommended two cords and when they arrived they were the same cord. Buyer beware its not what we wanted, it does not work for the kindle as described it would.
The adapter I got with it didn't fit. Case seems to be ok but haven't been able to use it yet because of the adapter
Answer: No adapter is needed just as long as it has a usb port you can plug it in