What is this connection interface?

Question

Iron

I understand that this is SO-Dimm, but rather unusual.
If anyone knows more about this, please tell me.

Answer 1

Returning to my answer to the question about the RAM Pitfalls of replacing RAM? ...
If you still read the manual, you would see there, in addition to the 4Gb limit, the inscription "Models have specialized unique memory modules, so you need to keep in mind that increasing the memory capacity after purchasing the product is not allowed."