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This Additional Information field contains the following sections
I. Summary of changes
II. Installation instructions
III. Determining which version is installed

I. Summary of changes
Version 4.01.5017
- (New) Initial release for ThinkPad 240X.

Version PS5017_R1Q1_IS
- (New) Support for ThinkPad 240Z.

Version PS5035_010209_1_C1
- (Fix) Roaming profile function of Microsoft Windows NT does not work.

Version PS5037
- (Fix) Even if mute function is enabled, it is canceled after the system is rebooted.

II. Installation instructions
NOTE: You must install Service Pack 4 or greater prior to installing this driver.

1. Start Windows NT 4.0.
2. Extract this package onto the hard disk drive.
3. Click Start and then click Run.
4. Type in C:\DRIVERS\WNT\AUDIO\SETUP.EXE in the Open box and click the OK button.
5. Follow the instructions on the screen.
6. Restart the system for the driver to be effective.

1. Find the file cwcfm.sys at \\winnt\system32\drivers\ in Microsoft Windows Explorer.
2. Right-click this file, and then click Properties.
3. Click the Version tab. The version is displayed here.