Function of the card:
2-5 way-no load.
SDTDL 2-5 way -a-o w and wo/load
Part number: 372209
Customer Eng reference number: 734374
PCB number: 484961 , hole pattern: 493457
IBM 2821 CCD, p27
IBM 1443 ALD, p83
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.