Sony CDU-31A, CDU-33A Free Driver Download
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These drivers are version 1.73a, and were downloaded from Sony's website in 1997. They are for the indicated CD-ROM drives when attached to interface card models Sony CDB-334, COR-333 or COR-334. I have used them successfully in Win 3.1 and Win 95. See included SONYCD.TXT for details re contents of the zipfile.
Rob M. (DG Member) on 11/29/2003
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