Memory hardware

Amazon hints that I can add 2 memory modules to the Nano 2/4 for an extra 8 gigabytes! Is this true? Where are the memory sticks mounted if so?
And speaking of memory, can we convert/run octoprint to run on a Nano 2GB? A 4GB?

I have no idea where this info is from, but it’s not possible to add extra memory on module.