Actually this is the DOS driver but works in Windows 3.1 since Win 3.x isn't an os. It's only a graphical interface the still requires dos in order to install and run. Install this driver in DOS and when you run Windows 3.x, the drive will still work .
The following files are found inside the driver download file.
|ACERCD.SYS||23.0 KB||15 May 1995|
|INSTALL.EXE||32.3 KB||5 Oct 1994|
|README.TXT||3.3 KB||7 Oct 1994|