While very similar, the back of the proto Neptune is much different than a stock Genesis 2 actually.
True, the connector panel on the back is much larger, but the bottom itself is exactly the same.
I composed some pictures for easy comparison, you can click on them for more detail.
BACK
BOTTOM (neptune proto on the right)
Last edited by dutchconsolefreak; 02-01-2014 at 04:46 AM.