the third cable isnt glued, it just has a particularly tenacious clip on the other side, its just a standard .1” header connector made by Molex I think. The clip on mine shattered removing it though (old brittle plastic) but the friction from the pins is more than enough to hold it in

so uh… why did you guys photoshop that last picture?

Dan, I don't think so. Its completely sealed inside the sandwich

Kapton tape on the underside for insulation, yeah

Is that a piece of flat flex connected across two parts of the lower board? going right under the middle screw hole

So what’s the extra half gigabyte of ram for?