Two holes on the bottom edge of the tablet align with two plastic tabs on the keyboard to connect the two. (pcmag.com)
A shelf folds down to hold the games / movies and it is supported by a couple of plastic tabs so that it is stable. (amazon.com)
It will take a bit of elbow grease to free the bottom cover, which «snaps» into the top cover along the perimeter with the aid of some small plastic tabs. (thatvideogameblog.com)