Amazon has long offered a “Download & transfer via USB” option for your purchases. That option was removed for the most recent generation of Kindles, and is going away for old models on February 26.

Starting on Wednesday, Feb. 26, readers will no longer be able to download Kindle e-books to a computer, where you can convert the file from Amazon's proprietary, Kindle-specific .AZW3 to a ...

Kindle books are all in Amazon's proprietary e-book format of .AZW3 files. These files can only be read on Kindle devices, so ...