Microsoft's Universal Audio Architecture (UAA) is a type of audio driver supported by the operating system. Many HP and Compaq PCs have an Intel High. Download the latest drivers for your HP Compaq nx to keep your Computer up-to-date. Device Name: Microsoft UAA Bus Driver for High Definition Audio. PCI Device Driver for Hewlett-Packard - HP Compaq b working on Microsoft Windows XP Microsoft UAA Bus Test Driver for High Definition Audio. Others.