It's look like very old thing to me:
It's in Black and White display. As you can see, it has a socket on the top of it .
What's the name and model of this computer monitor?
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Not a specific computer monitor at all, rather a generic B&W CRT screen. Setting looks also more like a CCTV, doesn't it, but I suspect it's from some game, so it's fantasy anyway.
That hole on the top isn't a socket, but a transport grip. Monitors meant to be integrated in some shelving (like usual for CCTV) got them embedded to save on space, allowing a denser package and reduce the need for cover/binds in shelving.