Function of the card:
Part number: 374546
Used in: 2415
Image courtesy of Dan Howard
Image courtesy of Roberto Gonzalez Rocha
The information on these pages comes from a variety of sources, especially old IBM documents on bitsavers.org, as well as information from the IBM 1401 restoration team, especially Tim Coslet's SMS data and Jim Hunt's data. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.