Realtek USB Audio DCH Driver

What you are downloading

This file comes straight from Dell's own download server. We do not host it, repack it or change it in any way - the download button takes you to the manufacturer's server, not to a file of ours.

Package: Realtek-USB-Audio-DCH-Driver_KDGRR_WIN_6.3.9600.2299_A20_03.EXE, 23.3 MB
Published by: Realtek
Digitally signed: Windows checks this signature before installing
Inside: 66 files - the driver itself, its setup instructions, a digital signature file and supporting libraries

Show the full list

DELLMUP.exe706 KB
mup.xml11 KB
package.xml30 KB
0x0402.ini24 KB
0x0403.ini25 KB
0x0404.ini10 KB
0x0405.ini23 KB
0x0406.ini23 KB
0x0407.ini25 KB
0x0408.ini27 KB
0x0409.ini22 KB
0x040a.ini25 KB
0x040b.ini22 KB
0x040c.ini26 KB
0x040e.ini23 KB
0x0410.ini25 KB
0x0411.ini15 KB
0x0412.ini14 KB
0x0413.ini24 KB
0x0414.ini23 KB
0x0415.ini24 KB
0x0416.ini23 KB
0x0418.ini24 KB
0x0419.ini23 KB
0x041a.ini23 KB
0x041b.ini23 KB
0x041d.ini23 KB
0x041e.ini22 KB
0x041f.ini22 KB
0x0421.ini24 KB
0x0424.ini23 KB
0x042d.ini23 KB
0x0804.ini11 KB
0x0816.ini24 KB
0x0c0c.ini26 KB
0x0c1a.ini23 KB
ISSetup.dll792 KB
RUAudExD.dll218 KB
RtSetupAPI.dll910 KB
RtSetupAPI64.dll1.0 MB
USetup.iss1 KB
data1.cab6.2 MB
data1.hdr47 KB
data2.cab1 KB
layout.bin1 KB
setup.exe1.1 MB
setup.ini4 KB
setup.inx268 KB
setup.iss1 KB
RTUSBAIODAT.DAT1.9 MB
RtDUsbAD_dell.inf12 KB
RtUsbA64.sys459 KB
rtdusbad.cat31 KB
RealtekUSBAPO.inf29 KB
RtkMicUUn64.dll7.0 MB
realtekusbapo.cat73 KB
RealtekService.inf27 KB
RtCOM64.dll1.1 MB
RtDataProc64.dll458 KB
RtkApi64U.dll867 KB
RtkAudUService64.exe1.3 MB
RtkAudUServiceConf64.dll47 KB
RtkCfg64.dll219 KB
realtekservice.cat27 KB
ExtRtXUsb_Dell_WAVES.inf21 KB
extrtxusb.cat31 KB

Nothing happens on its own: you download the file and decide yourself whether to install it.

Manufacturer: Realtek
Device: 2 devices - see the list below
Driver version: 6.3.9600.2299
Release date: September 1, 2025
Supported Windows: Windows 11, Windows 10
Architecture: 64-bit (x64)
File size: 23.3 MB
File name: Realtek-USB-Audio-DCH-Driver_KDGRR_WIN_6.3.9600.2299_A20_03.EXE
Digital signature: Signed - catalog RealtekUSBAPO.cat
INF version: 08/16/2021,11.0.6000.950
INF provider: Realtek
Device class: SoftwareComponent
Source: Dell official catalog
Last verified: August 10, 2026
SHA-256: d104d6cba40ec96385b6cc360072b34baac7daa0fdd7fd2228f9cc227523bede

Supported devices (2)

GeForce RTX 3050 Mobile
GeForce RTX 3050 Ti Mobile

Supported hardware IDs (3)

Compare with your device: Device Manager → right-click the device → Properties → Details → Hardware Ids. If one of the values above matches, this driver supports your hardware.

How to install

Before you start: create a restore point (Start → type "Create a restore point" → Create). It takes a minute and lets you undo everything if the new driver turns out worse than the old one. This driver is made for Windows 11, Windows 10 (64-bit) - if your Windows is different, look for another version further down the page.

Download the file with the button above - it comes directly from Dell official catalog.
Double-click the downloaded file and follow the prompts - the installer does the rest.
If it asks to restart the computer, let it.

Check it worked: open Device Manager again. The device should no longer show a warning icon, and its driver version should match the one on this page.

How to roll back

If the device stops working after the update: Device Manager → right-click the device → Properties → Driver tab → Roll Back Driver. If that button is greyed out, use the restore point you made before installing (Start → "Recovery" → Open System Restore).

All versions (2)

Version	Released	Windows	Size
6.3.9600.2299latestSHA-256	September 1, 2025	10, 11	23.3 MB	Download
6.3.9600.2330SHA-256	September 1, 2025	10, 11	26.4 MB	Download