On Tuesday, 23 August 2016 23:39:55 UTC+1, Louis Ohland wrote:
> As I was leafing through a book by Arch Luther, one of the most
> influential DVI developers, I spied a picture of two separate
> ActionMedia cards, each with the finger tab and the slot cover end.
> So... the delivery and capture cards were separate at one point.
Don't forget, IBM often badge-engineered "the best of the rest" for particular solutions and 'adapters', often specifying modifications in design or doing fab shrinking to enable higher density ones.