On Kindle 5 find this menu via Main Menu=: Settings: Menu=: Device Info (unintuitively, the Main Menu's content changes while in Settings or other sub-menu contexts). On that page, you should find either an entry or a menu called Device Info, which will give you everything you need. The easiest way to find it is in the Settings page/menu on your Kindle.
To confirm which Kindle model you have, we'll use the serial number of your device.
