Details:

1. It's obviously not GG hardware. There's a bootloader to launch the games and modern chips on the board.

2. There are two obfuscated chips - one on front has foam glued to the top, and on the back (I assume its the CPU, likely an ARM) is covered with a serial number sticker.

3. Above may not be relevant because there's actually a finger switch near the USB plug. If you hold it down while turning power on and plugged into a computer, it opens the USB connection.

Unfortunately that's as far as I got, because I don't really know how to probe the port or what next steps after opening the connection would be. (adb doesn't recognize it, so probably not android?)