Operating System: Windows 95 (Note: might work with other versions of this os.)
This driver requires a 1.44 mb. floppy disk. When you double click the file, it will prompt you to insert a floppy disk into the floppy drive so be sure to have a freshly formatted disk on hand before extracting the driver.
You then launch the exe file on the floppy to start the installation.
To see the installation instructions, please read the info on this page:
(Note: This is a google translated page from Japanese to English.)
There is also a bios upgrade from BIOS R1.09 to R1.20 and keyboard controller firmware upgrade available here:
(Note: Again, this page is translated from Japanese to English by Google)