Neo Geo Deck
The Neo Geo Deck "Room Amusement System" was a special version of the Neo Geo hardware meant to be used as a pay-per-play system in hotel rooms. It's basically a hardened 1-slot arcade system with a TV output.
The GIT-SW daughter board seems to be an additional video switching/conversion board (two Omron G6A-434P-12V relays and RGB amp ?).