[KindleReader36]

I have an iMac if that helps, a Kindle Paperwhite and the USB. I've tried everything, unplugging and replugging, restarting the computer, restarting the kindle, replugging into another port, nothing works. My computer will charge the Kindle, but it won't show up. I just got a few books off a website I really want to add to my Kindle Paperwhite, but it just plain won't work. My iMac won't read it! Please help