nostr:npub1vr4dqq5vzpz0kaavv3lc3098jmfzrpdtj79dazpemytqw4ansf0q2d92wq VGA also has I²C. It's used to communicate with the monitor to find out its capabilities, even when it's switched off.

https://hackaday.com/2014/06/18/i2c-from-your-vga-port/