These are Aureal Semiconductor's reference drivers. They will be different than the ones that you received from the manufacturer of your sound card. Each of the sound board manufacturer's drivers are modified to support various features that are unique to the board. As a result, Aureal in no way guarantees the functionality and stability of these drivers and are made available for reference purposes only. Please contact your sound board manufacturer for support questions.<BR>Some A3D sound cards use the Aureal Vortex AU8820 processor, some A3D sound cards do not. Verify that your sound card uses the Vortex AU8820 before downloading these drivers. Additionally, the following sound cards and PCs are sufficiently different from the Vortex reference design that is strongly urged that you DO NOT download these drivers, but instead get them from the sound card manufacturer (see the A3D.com Support page for more info)