This page describes the IBM SMS card "EJB", and is part of the SMS card database.

Part number: 374715

PCB number: 396797

Cap code: None (details)

IBM SMS card type EJB 374715 IBM SMS card type EJB 374715

Image courtesy of Henk Stegeman

The information on these pages comes from a variety of sources, especially old IBM documents on, 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.