Amazon Kindle devices are automatically named when you activate them to something like, "Ed's Kindle." A second Kindle on your account will be named, "Ed's 2nd Kindle." If you want to change the name to something a bit more descriptive, like the specific model (Paperwhite, Fire, Fire HD, etc.), here's how:
Step 1: Go to the Amazon Kindle management page and log in with the account you used to register your Kindle. Under the "Your Kindle Account" section, click on "Manage your Devices."
Step 2: Click on the "… Read more