Operating System: Windows 98 (Note: might work with other versions of this os.)
The driver might work with XP and 2000 as well, and something called Windows98 Gold (!?). Windows 98 SE should work if you have Directx8.
It should work on other motherboards as well because the driver is from Realtek, the maker of the sound chip. The Gigabyte website also has sound drivers, so if this doesn't work for you, check there.