@INSTALLGENTOO where did you get this model? my bad i don’t quite understand what you’re trying to do, but i know @hideki may know more than me
@INSTALLGENTOO @waifu looks like this guy is working with some custom shaders that have a lot of node groups.
Like, that node called Texture Files is a node group, you just click on it and press TAB to enter it, then inside looks like there's a bunch of empty image texture nodes minimized, he just maximized one and then loaded an image file on it.
@INSTALLGENTOO @waifu probably you don't need to do that, maybe he just wanted to show you the file that was loaded in that node and how it looked as a simple image.