I'm not entirely sure it is a Google device. The horrid plastic? The lead with two wires coming out of it?

Is it a cheap crappy knockoff?

Knockoff Chromecast

Ahhh the infamous Gromecast

chromecast ultra ?

It's a knock off Chromecast with a usb ethernet adapter plugged in.

It probably uses Miracast instead of Google cast.

here you go..

ADT3?

Google. It has a G on it. It's a chromecast.