IBM 3540 Diskette I/O Unit @uniservo
IBM 3540 Diskette I/O Unit @uniservo
Uploaded March 2017 | Updated September 2026, 3 weeks ago
Sort of a request from retrobattlestations on reddit - an inside view of an IBM 3540. This huge box was the way one attached an 8" floppy drive to a System/370 mainframe back in the mid 1970s.
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IBM 3540 Diskette I/O Unit

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