Realtek USB Audio
Realtek USB Audio 6.3.9600.2215 can be downloaded from our software library for free. The current installer available for download requires 31.5 MB of hard disk space. Realtek USB Audio belongs to System Utilities. This download was scanned by our antivirus and was rated as clean. This free program is an intellectual property of Realtek.
From the developer:
This package provides the driver for the Realtek ALC3263 USB audio codec on Dell Wireless Dock, Dell Thunderbolt Dock, Dell Dock, and Dell Docking Monitor Stand, supported by Latitude/Precision/XPS.
You may want to check out more software, such as McIntosh USB Audio Driver, FOSTEX USB Audio or M-Audio Fast Track C600 Driver x86, which might be similar to Realtek USB Audio.