There are two files here. I threw in the .pdf installation instructions just for good measure, but the main file is the .exe file which came from
This page doesn't specifically state that it's for the CDU-701, but Dell had another page which let me put two and two together
This version of atapi_cd.exe is distinctly different from what I found at Sony's website and I'm firmly convinced that Dell's is the correct version because it is dated 7/7/98 and the crap Sony puts on their own web page is dated more than two years before that.
The following files are found inside the driver download file.
|cdu701_e.pdf||111.3 KB||27 Feb 1999|
|atapi_cd.exe/readme.txt||466 bytes||8 Jul 1998|
|atapi_cd.exe/atapi_cd.sys||29.2 KB||7 Jul 1998|