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

Function of the card:
12 volt amplifier card for mps

12V power supply

Part number: 372085

Used in: IBM 2821 Control Unit, 2415

Cap code: None (details)

References: IBM 2821 CCD, p121

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.