[GlenBarrington]

Originally Posted by Little.Egret

Check the serial number, that will tell you.

https://wiki.mobileread.com/wiki/Kindle_serial_numbers

I understand that for some Kindles both a 2GB and a 4GB model exist

Thanks for that link! It was very informative. My device starts with "B017".
Apparently, I have a 4 GB PW2 wireless model. However, my device does NOT have wireless.

I wonder if these devices failed QC for wireless capability, and were flashed with the WiFi only OS. In which case, I wonder what will happen when an OS upgrade occurs (or will it even upgrade at all?)