No. It's a Moto Z4, which is compatible with Motorola's "Mods" ecosystem which are a variety of accessories you can stick to the back. For data transfer they connect to those pads via pogo pins.
There are battery extender backs (which I have), a full-on gamepad case (which I also have) and also a 360 degree camera, a backplate that adds wireless charging, a mini projector, a beefed up speaker back, and an entire replacement Hasselblad camera you can stick on it as well. There was going to be a slide out physical keyboard module, too, which unfortunately turned out to be vaporware.