Driver Installation Steps

1. Double-click the downloaded driver file e.g. R90698.EXE.
2. The Self-Extracting window appears and prompts you to extract or unzip to C:/DELL/DRIVERS/r90698. Write down this path so the executable (I.e. Setup.exe) file can be found later.
3. The Self-Extractor window appears.
4. Click OK.
5. After completing the file extraction, if the Self-Extractor window is still open, close it.
6. Click the Start button and then click Run.
7. Type C:/DELL/DRIVERS/r90698 in the Open textbox and then click OK.
8. Follow the on-screen installation instructions.

Beside Dell Latitide D600, this Sigmatel STAC 9750 audio driver can be used for the following Dell systems:

1. Inspiron 1100
2. Inspiron 500m
3. Inspiron 1150
4. Inspiron 300m
5. Inspiron 5100
6. Inspiron 5150
7. Inspiron 5160
8. Inspiron 8500
9. Inspiron 9100
10. XPS/Inspiron XPS
11. Inspiron 8600
12. Inspiron 510m
13. Inspiron 600m
14. Inspiron 700m
15. Inspiron 710m
16. Latitude D500
17. Latitude 100L
18. Latitude X300
19. Latitude D400
20. Latitude D505
21. Latitude D800
22. Dell Precision Mobile WorkStation M60

Alternatively, you can try the Free Driver Scanner.