If you're speaking of a rectangular arrangement (I can't find a picture), this input was in use with televisions in the 1980s and 1990s. It is obsolete today. It was a snap-on connector that supported only analog RGB at what we would call 480i today. It was never in wide use outside of TV studios. Generally it was used with what we used to call a "harness" or "breakout box" that converted it to either 9-pin CGA or five BNC connectors.
There was also a round 8-pin DIN connector that was in use by some video games in the 1980s. I never saw a television with this connector.
The only images I'm seeing of a Kworld PC to TV converter show a 15-pin VGA connector.
There was also a round 8-pin DIN connector that was in use by some video games in the 1980s. I never saw a television with this connector.
The only images I'm seeing of a Kworld PC to TV converter show a 15-pin VGA connector.