Editing IBM Model F (section)

===IBM 5291 Keyboard===
IBM's 5291 terminals also did not use the same keyboard as the Datamaster, mounted in a larger case than the PC/XT keyboard. (For this reason, aficionados often refer to the 5291 as "Bigfoot".) It had the same functional layout as the 5251 terminal keyboard, and attached to the terminal with a 15-pin connector. An unusual feature was the keyboard's three-stage risers. US-layout variants had the part numbers '''4176191'''<ref name=ibm4176191/> and '''1397950'''.

<gallery widths=250 heights=170>
IBM 5291 Bigfoot - overview.jpg       | The keyboard of the IBM 5291
IBM 5291 Bigfoot - bottom.jpg         | Bottom
IBM 5291 Bigfoot - max height.jpg     | Detail of the risers set to max height
IBM 5291 Bigfoot - medium height.jpg  | Medium height
IBM 5291 Bigfoot - minimum height.jpg | Minimum height
</gallery>