Microchannel for IBM with their PS/2 line. There was also the VGA "feature connector" which was used sometimes for video capture, mpeg decoders, and so on: htt

Microchannel for IBM with their PS/2 line. There was also the VGA "feature connector" which was used sometimes for video capture, mpeg decoders, and so on: https://en.wikipedia.org/wiki/Feature_connector https://en.wikipedia.org/wiki/Feature_connector