The Workstation/Portrait Video Card is a 2-bit grayscale NuBus video card released in 1988 capable of showing 4 shades of grey simultaneously or 16-shade 4-bit grayscale with an optional VRAM upgrade. Unlike nearly every Apple display product, the Workstation/Portrait Video Card uses a 13w3 video connector instead of the standard db-15 connector used until the use of PC standard VGA connectors.
Its name comes from the unusually tall 640 x 870 pixel resolution, which produces an image to match
a sheet of paper being held in a normal "tall" position. The pairing of the Apple Portrait Display
is needed as no other Apple displays support its resolution.
The card uses the same Apple/Toshiba 344S0077 video controller as used by the Apple High Resolution Display Video Card.
Apparently some versions of this card use a standard db-15 connector, however, I have never
actually seen one.