Help me guys

[bumblebee]

Someone here has to know computer stuff more than me and my friend. (We are getting into this stuff) What is this called and what is its purpose, the VGA port is different. Help me out.

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[Daswiruch]

de-9/d-sub to be more precise
https://en.wikipedia.org/wiki/D-subminiature

[bumblebee]

Thanks dude!