Tell me please where RAM

i bad speak english but i was able write you 👍

if I leave one SSD of such a company, and change the right or left one to Samsung, will they function normally together?

sorry guys, I'm new to all this and I don't understand, exactly the same heatsink on the right side of the laptop what is it, is this really the second connector for the m2 PCI 3.0 x 4 ssd connector.
Pls help me