Originally Posted by vaughnmr
Go to the "Settings" menu at the home screen, and it will tell you how much memory is available on the sd card. I assume that's how much it can use.
That answers my question.
It also shows how little I know about the Kindle. My wife was reluctant to let me experiment with her's.
I inserted an 8GB SD Card and the Kindle reports 4GB. I agree that is the max that it can address.