Model: 3C509, 3C509B, 3C509B-C
Operating System: Windows XP (Note: might work with other versions of this os.)
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Tested on Windows XP Professional SP2 with 3C509B-C (Combo AUI, Coax, RJ45) ISA: works fine!
It most likely will also work on Windows NT4, Windows 2000 and Windows Server 2003.