Operating System: Windows 2000 (Note: might work with other versions of this os.)
Before downloading: Run Free Scan for Instant Driver Updates
Toshiba 1605CDS Driver. I found this driver at www.cirrus.com/drivers/audiodrv/win_2k.cfm
It works with the Toshiba 1605CDS and Windows 2000. The chipset is the CS4281. There are other drivers at this sight.