How many memory slots are there in a Lenovo Ideapad 100-15IBD laptop?

Question

Iron

Good afternoon, the 3rd day is tormented by the question: how many memory slots are in the Lenovo Ideapad 100-15IBD laptop and are they soldered.
Reference model: 80QQ004 GFR.
It's a 5005u with 4GB of RAM and built-in video and 1TB of hard drive.
Judging by the specification , there are 2 so-dimm slots, and the picture in the service manual (PDF, page 41) shows only one.
On the Internet, there really is no review of these models where they climb inside and where the quality of the pictures is normal.

Answer 1

And so, here is the answer (translation):
technically there are two slots, but one is available , and the second is soldered.
There are three configurations:
So there is only one slot for replacement, in which there is already a module that comes with the laptop.