It allows it to accept higher quality analog signal input for old video game systems. RGB separates the signals into 4 (in this case) separate inputs, one each for Red, Green, and Blue colors in the image, as well as sync on the fourth input. the image is much clearer than you’d have typically seen from systems on this TV back in the day using composite, or S-video if you were fancy. It’s the highest quality analog signal you can get for a CRT.
It allows it to accept higher quality analog signal input for old video game systems. RGB separates the signals into 4 (in this case) separate inputs, one each for Red, Green, and Blue colors in the image, as well as sync on the fourth input. the image is much clearer than you’d have typically seen from systems on this TV back in the day using composite, or S-video if you were fancy. It’s the highest quality analog signal you can get for a CRT.