1. Download the YA-E21520801H4.EXE file to a temporary or download directory (please note this directory for reference).
2. Go to the directory where the file was downloaded and double-click the YA-E21520801H4.EXE file to begin the installation.
3. When a "Software Status" message box with the text "This software driver has never been installed in your computer system. Would you like to continue the installation?" appears, click "Yes".
4. At the "InstallShield Wizard Complete" screen, select "Yes, I want to restart my computer now." and click "Finish".

After the computer restarts, the installation of the Yamaha® AC-XG Audio Device Driver is complete.

This utility installs the Yamaha® AC-XG Audio Device Driver to resolve an issue where audio does not function after installing Microsoft® Windows® XP Service Pack 1 or Service Pack 2.

• WARNING!!  If you plan to install Microsoft® Windows® XP Service Pack 1 (SP1) or Sevice Pack 2 (SP2), it is recommended that you install this driver update BEFORE you begin the installation.
• During the installation of this update, be sure that you are logged in as the Administrator or as a user with Administrative rights.
• To ensure that no other program interferes with the installation, save all work and close all other programs. The Taskbar should be clear of applications before proceeding.
• It is highly recommended to print out these instructions as a reference during the installation process.