Operating System: Windows 2000 (Note: might work with other versions of this os.)
The Cristal Sound Fusion CS4281 PCI is re-labeled as a Yamaha product. This driver was downloaded from official cirrus logic(cristal)page. www.cirrus.com
Driver for all WDM OS (WinME/Win98SE/Win2000)
Probably works for XP as well.
Tested by me on WinME