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IBM 3420 Field Tester


Veteran Member
Oct 20, 2006
Boston, MA
Digging through more stuff, I found this odd box. It's an IBM 3420 Field Tester. From what I gather based on the instructions, its to test a tape drive. The connector for it, on the end of a ribbon cable, consists of two rows of pins, with a good gap between them, maybe 1/8 inch. It is a female plug with 24 holes.

Make offer.