The ASUS Xonar DX Audio Device is a sound card developed by ASUS that provides high-quality audio for your computer. It's a part of the Xonar series, known for offering enhanced sound quality and advanced audio features. The Xonar DX is specifically designed for PCI Express slots, typically aimed at gamers, audiophiles, and users who want high-definition sound for entertainment, music production, or gaming.

The Windows driver for the ASUS Xonar DX Audio Device is software that allows your computer to communicate with the sound card, enabling it to output audio correctly through connected speakers or headphones.