That's what I'm wondering here. If it's just a normal m.2 slot then you're way better off price-wise getting the entry level unit and upgrading later on.
You probably can. Everything seems standard hw and they are touting the ability to add anything to it and even replace the OS. It won't be locked down like Apple's hw.
It claims to be a eMMC but goes on to clarify it is a PCIe Gen2 x1 connection. Does this mean it is just a m.2 card?