Oh, this was the SDI hack, but it needed a separate port expander - it was more involved than just removing a plate. You could buy the base AV1 "analog" video

Oh, this was the SDI hack, but it needed a separate port expander - it was more involved than just removing a plate. You could buy the base AV1 "analog" video I/O card and then plug an SDI expansion breakout board (I think the Miranda VIVO was the most popular) into the webcam port, instead of buying the much more expensive AV2 "digital" video I/O card.