The CS4630 is a high performance upgrade to the CS4624 PCI audio accelerator. With support for legacy compatibility modes, the CS4630 enables real mode DOS compatibility within PCI-only audio subsystems. This device, combined with application and driver software, provides a complete system solution for hardware acceleration of Microsoft's DirectSound, DirectSound3D, DirectInput, and Wavetable Synthesis. WDM drivers provide support for both Windows 98 and Windows 2000.