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

Function of the card:
Overvoltage Protection 6 Volt
Power supply

Listed in 1401 SMS card usage

Part number: 370575

Used in: IBM 1401, IBM 1414 I/O Synchronizer, 7040

Cap code: None (details)

IBM SMS card type YGA 370575 IBM SMS card type YGA 370575 IBM SMS card type YGA 370575 IBM SMS card type YGA 370575 IBM SMS card type YGA 370575 IBM SMS card type YGA 370575

Image courtesy of Göran Axelsson

References: 1_2 SMS Cards, pp6,7
Coslet data

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.