I purchased this on Amazon a year ago and tried it out, but the tablet kept slipping off, probably because the magnets weren't strong enough. I saw similar complaints in the reviews. The tablet did respond when I placed it next to the keyboard and typed. I ended up storing it unused, so I'm putting it up for sale. I apologize, but I'm not very knowledgeable about these things, so I won't be able to answer any technical questions. Thank you.